From Middle Englishbere, from Old Englishbera, from Proto-West Germanic*berō, from Proto-Germanic*berô (compare West Frisianbear, Dutchbeer, GermanBär, Danishbjørn).
A large omnivorous mammal, related to the dog and raccoon, having shaggy hair, a very small tail, and flat feet; a member of family Ursidae.
(figuratively) A rough, unmannerly, uncouth person. 
(finance) An investor who sells commodities, securities, or futures in anticipation of a fall in prices. 
(CB radio, slang, US) A state policeman (short for smokey bear). [1970s]
1976 June, CB Magazine, Communications Publication Corporation, Oklahoma City, June 40/3:
‘The bear's pulling somebody off there at 74,’ reported someone else.
2015, Matt Cashion, Last Words of the Holy Ghost (page 85)
He was listening for reports of Kojaks with Kodaks, or bear sightings (cop alerts) at his front door (ahead of him), especially plain wrappers (unmarked police cars) parked at specific yardsticks (mile-markers) taking pictures […]
(slang) A large, hairy man, especially one who is homosexual. 
1990, "Bears, gay men subculture materials" (publication title, Human Sexuality Collection, Collection Level Periodical Record):
2004, Richard Goldstein, Why I'm Not a Bear, in The Advocate, number 913, 27 April 2004, page 72:
I have everything it takes to be a bear: broad shoulders, full beard, semibald pate, and lots of body hair. But I don't want to be a fetish.
2006, Simon LeVay, Sharon McBride Valente, Human sexuality:
There are numerous social organizations for bears in most parts of the United States. Lesbians don't have such prominent sexual subcultures as gay men, although, as just mentioned, some lesbians are into BDSM practices.
(engineering) A portable punching machine.
(nautical) A block covered with coarse matting, used to scour the deck.
(cartomancy) The fifteenth Lenormand card.
(colloquial, US) Something difficult or tiresome; a burden or chore.
(large omnivorous mammal): see Thesaurus:bear
(rough, uncouth person): see Thesaurus:troublemaker
(police officer): see Thesaurus:police officer
→ Hawaiian: pea
→ Irish: béar
→ Maori: pea
→ Tokelauan: pea
See bear/translations § Noun.
bear (third-person singular simple presentbears, present participlebearing, simple past and past participlebeared)
(finance, transitive) To endeavour to depress the price of, or prices in.
bear (not comparable)
(finance, investments) Characterized by declining prices in securities markets or by belief that the prices will fall.
Appendix:English collective nouns
Donald A. Ringe, From Proto-Indo-European to Proto-Germanic (2006), Linguistic history of English, vol. 1, Oxford: Oxford University Press →ISBN
bear on Wikipedia.Wikipedia
From Middle Englishberen(“carry, bring forth”), from Old Englishberan(“to carry, bear, bring”), from Proto-West Germanic*beran, from Proto-Germanic*beraną, from Proto-Indo-European*bʰéreti, from *bʰer-(“to bear, carry”).
Akin to Old High Germanberan(“carry”), Dutchbaren, Norwegian Bokmålbære, Norwegian Nynorskbera, Germangebären, Gothic𐌱𐌰𐌹𐍂𐌰𐌽(bairan), Sanskritभरति(bhárati), Latinferre, and Ancient Greekφέρειν(phérein), Albanianbie(“to bring, to bear”), Russianбрать(bratʹ, “to take”), Persianبردن (bordan, “to take, to carry”).
[…] imitations that bear the same name as the things […]
2013, D. Goldberg, Universe in Rearview Mirror iii. 99:
Heinrich Olbers described the paradox that bears his name in 1823.
(transitive) To possess or enjoy (recognition, renown, a reputation, etc.); to have (a particular price, value, or worth). 
(transitive, of an investment, loan, etc.) To have (interest or a specified rate of interest) stipulated in its terms. 
(transitive, of a person or animal) To have (an appendage, organ, etc.) as part of the body; (of a part of the body) to have (an appendage).
(transitive) To carry or hold in the mind; to experience, entertain, harbour (an idea, feeling, or emotion).
(transitive, rare) To feel and show (respect, reverence, loyalty, etc.) to, towards, or unto a person or thing.
(transitive) To possess inherently (a quality, attribute, power, or capacity); to have and display as an essential characteristic.
(transitive, of a thing) To have (a relation, correspondence, etc.) to something else. 
(transitive) To give (written or oral testimony or evidence); (figurative) to provide or constitute (evidence or proof), give witness.
(transitive) To have (a certain meaning, intent, or effect).
Her sentence bore that she should stand a certain time upon the platform.
(reflexive, transitive) To behave or conduct (oneself).
(transitive, rare) To possess and use, to exercise (power or influence); to hold (an office, rank, or position).
Every man should bear rule in his own house.
(intransitive, obsolete) To carry a burden or burdens. 
(transitive, obsolete, rare) To take or bring (a person) with oneself; to conduct. 
To support, sustain, or endure.
(transitive) To support or sustain; to hold up.
(now transitive outside certain set patterns such as 'bear with'; formerly also intransitive) To endure or withstand (hardship, scrutiny, etc.); to tolerate; to be patient (with).
1700, John Dryden, "Meleager and Atalanta", in: The poetical works, vol. 4, William Pickering, 1852, p. 169:
I cannot, cannot bear; ’tis past , ’tis done; / Perish this impious , this detested son; […]
(transitive) To sustain, or be answerable for (blame, expense, responsibility, etc.).
The hirer must bear the cost of any repairs.
He shall bear their iniquities.
1753, John Dryden, The Spanish Friar: or, the Double Discovery, Tonson and Draper, p. 64:
What have you gotten there under your arm, Daughter? somewhat, I hope, that will bear your Charges in your Pilgrimage.
(transitive) To admit or be capable of (a meaning); to suffer or sustain without violence, injury, or change.
1724, Jonathan Swift, Drapier's Letters
In all criminal cases the most favourable interpretation should be put on words that they can possibly bear.
(transitive) To warrant, justify the need for.
To support, keep up, or maintain.
(transitive) To afford, to be something to someone, to supply with something. (Can we add an example for this sense?)
1732–4, Alexander Pope, An Essay on Man, Longmans, Green & Co, 1879, bear%20him%20company%20pope&hl=de&pg=PA10#v=onepage&q&f=false p. 10:
[…] admitted to that equal sky, / His faithful dog shall bear him company.
(transitive) To carry on, or maintain; to have. (Can we add an example for this sense?)
1693, John Locke, Some Thoughts Concerning Education, § 98:
[…] and he finds the Pleasure, and Credit of bearing a Part in the Conversation, and of having his Reasons sometimes approved and hearken'd to.
To press or impinge upon.
(intransitive, usually with on, upon, or against) To push, thrust, press.
These men therefore bear hard upon the suspected party.
(intransitive, figuratively) To take effect; to have influence or force; to be relevant.
(intransitive, military, usually with on or upon) Of a weapon, to be aimed at an enemy or other target.
2012, Ronald D. Utt, Ships of Oak, Guns of Iron
Constitution's gun crews crossed the deck to the already loaded larboard guns as Bainbridge wore the ship around on a larboard tack and recrossed his path in a rare double raking action to bring her guns to bear again on Java's damaged stern.
To produce, yield, give birth to.
(transitive) To give birth to (someone or something) (may take the father of the direct object as an indirect object).
(transitive, less commonly intransitive) To produce or yield something, such as fruit or crops.
1688, John Dryden, Britannia Rediviva
Betwixt two seasons comes th' auspicious air, / This age to blossom, and the next to bear.
(intransitive, originally nautical) To be, or head, in a specific direction or azimuth (from somewhere).
(transitive, obsolete) To gain or win.
1612, Francis Bacon, Of Seeming Wise
Some think to bear it by speaking a great word.
April 5, 1549, Hugh Latimer, The Fifth Sermon Preached Before King Edward (probably not in original spelling)
She was […] found not guilty, through bearing of friends and bribing of the judge.
The past participle of bear is usually borne:
He could not have borne that load.
She had borne five children.
This is not to be borne!
However, when bear is used in the passive voice to mean "to be given birth to" literally or figuratively (e.g. be created, be the result of), the form used to form all tenses is born:
She was born on May 3.
Racism is usually born out of a real or feared loss of power to a minority or a real or feared decrease in relative prosperity compared to that of the minority.
Born three years earlier, he was the eldest of his siblings.
"The idea to create [the Blue Ridge Parkway] was born in the travail of the Great Depression […]." (Tim Pegram, The Blue Ridge Parkway by Foot: A Park Ranger's Memoir, →ISBN, 2007, page 1)
Both spellings have been used in the construction born(e) into the world/family and born(e) to someone (as a child). The borne spellings are more frequent in older and religious writings.
He was born(e) to Mr. Smith.
She was born(e) into the most powerful family in the city.
"[M]y father was borne to a Swedish mother and a Norwegian father, both devout Lutherans." (David Ross, Good Morning Corfu: Living Abroad Against All Odds, →ISBN, 2009)
In some colloquial speech, beared can be found for both the simple past and the past participle, although it is usually considered nonstandard and avoided in writing. Similarly, bore may be extended to the past participle; the same provisos apply for this form.
(to put up with something):brook, endure; See also Thesaurus:tolerate
bear at OneLook Dictionary Search
bear in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
Alternative spelling of bere(“barley”).
1800, Tuke, Agric., 119:
There are several plots of those species of barley called big, which is six-rowed barley; or bear, which is four-rowed, cultivated.
1818, Marshall, Reports Agric., I. 191:
Bigg or bear, with four grains on the ear, was the kind of barley.
1895, Dixon, Whittingham Vale, 130:
Two stacks of beare, of xx boules,
1908, Burns Chronicle and Club Directory, page 151:
[…] one wheat stack, one half-stack of corn, and a little hay, all standing in the barnyard; four stacks of bear in the barn, about three bolls of bear lying on the barn floor, two stacks of corn in the barn, […]
1802-1816, Papers on Sutherland Estate Management, published in 1972, Scottish History Society, Publications:
Your Horses are Getting Pease Straw, and looking very well. The 2 Stacks of Bear formerly mentioned as Put in by Mr Bookless is not fully dressed as yet so that I cannot say at present what Quantity they may Produce .
Middle Englishbere(“pillowcase”), of obscure origin, but compare Old Englishhlēor-bera(“cheek-cover”). Possibly cognate to Low German büre, whence GermanBühre, which in turn has been compared to Frenchbure.
(obsolete) A pillowcase; a fabric case or covering as for a pillow.
1742, William Ellis, The London and Country Brewer [...] Fourth Edition, page 36:
And, according to this, one of my Neighbours made a Bag, like a Pillow-bear, of the ordinary six-penny yard Cloth, and boiled his Hops in it half an Hour; then he took them out, and put in another Bag of the like Quantity of fresh Hops, […]
1850, Samuel Tymms, Wills and Inventories from the Registers of the Commissary of Bury St. Edmunds and the Archdeacon of Sudbury, page 116:
ij payer of schete, ij pelows wt the berys,
1858, Journal of the Statistical Society of London, page 409:
1641.—14 yards of femble cloth, 12s. ; 8 yards of linen, 6s. 8d. ; 20 yards of harden, 10s. ; 5 linen sheets, 1l. ; 7 linen pillow bears, 8s. ; 2 femble sheets and a line hard sheet, 10s. ; 3 linen towels, 4s. ; 6 lin curtains and a vallance, 12s. ; […]
1905, Emily Wilder Leavitt, Palmer Groups: John Melvin of Charlestown and Concord, Mass. and His Descendants ; Gathered and Arranged for Mr. Lowell Mason Palmer of New York, page 24:
I give to my Grand Child Lidea Carpenter the Coverlid that her mother spun and my pillow bear and a pint Cup & my great Pott that belongs to the Pott and Trammels.
1941, Minnie Hite Moody, Long Meadows, page 71:
[…] a man's eyes played him false, sitting him before tables proper with damask and pewter, leading him to fall into beds gracious with small and large feather beds for softness and pillowed luxuriously under pretty checked linen pillow bears.
Aber, Bare, Baré, Brea, Reba, bare, brae, rabe
alternative genitive plural of bior(“pointed rod or shaft; spit, spike; point”)
"bear" in Foclóir Gaeilge–Béarla, An Gúm, 1977, by Niall Ó Dónaill.
From Old Frisianbera, from Proto-West Germanic*berō, from Proto-Germanic*berô.
bearc (pluralbearen, diminutivebearke)
“bear (II)”, in Wurdboek fan de Fryske taal (in Dutch), 2011