Someone or something that buffs (polishes and makes shiny).
A machine with rotary brushes, passed over a hard floor to clean it.
A machine for polishing shoes and boots.
(slang, archaic, Ireland) A boxer.
1821, Pierce Egan (the Elder), Boxiana; or, Sketches of antient and modern pugilism (page 117)
Such a buffer as Donnelly, / Ereland never again will see.
Derived terms
buffer lass
buffer rodeo
circular buffer
Translations
Adjective
buffer
Comparative form of buff: more buff.
Etymology 2
Agent noun from obsolete verb buff(“make a dull sound when struck”) (mid-16c.), from Old Frenchbuffe(“blow”).
The “boatswain's mate” sense is said to be popularly explained by the mate being a “buffer”, that is intermediary, between officers and men, but various other explanations have also been proposed.
Noun
buffer (pluralbuffers)
(chemistry) A solution used to stabilize the pH (acidity) of a liquid.
(computing) A portion of memory set aside to temporarily store data, often before it is sent to an external device or as it is received from an external device.
Anything used to isolate or minimize the effect of one thing on another.
(mechanical) Anything used to maintain slack or isolate different objects.
(telecommunications) A routine or storage medium used to compensate for a difference in rate of flow of data, or time of occurrence of events, when transferring data from one device to another.
(rail transport) A device on trains and carriages designed to cushion the impact between them.
1885, W. S. Gilbert, The Mikado, Act II, in The Mikado, and Other Plays, New York: Modern Library, 1917, p. 42, [2]
The idiot who, in railway carriages, / Scribbles on window panes, / We only suffer / To ride on a buffer / In Parliamentary trains.
(rail transport) The metal barrier to help prevent trains from running off the end of the track.
An isolating circuit, often an amplifier, used to minimize the influence of a driven circuit on the driving circuit.
(politics, international relations) A buffer zone (such as a demilitarized zone) or a buffer state.
(figurative) A gap that isolates or separates two things.
(UK, nautical, slang) The chief boatswain's mate.
Derived terms
Translations
Verb
buffer (third-person singular simple presentbuffers, present participlebuffering, simple past and past participlebuffered)
To use a buffer or buffers; to isolate or minimize the effects of one thing on another.
(video games) To queue up (an input) so that it is performed immediately once it is possible.
(computing) To store data in memory temporarily.
(chemistry) To maintain the acidity of a solution near a chosen value by adding an acid or a base.
Derived terms
buffer up
debuffer
unbuffer
Translations
Etymology 3
Noun
buffer (pluralbuffers)
(colloquial) A good-humoured, slow-witted fellow, usually an elderly man.