Definitions and meaning of tup
- IPA(key): /tʌp/
- Rhymes: -ʌp
From Middle English tupe (compare Scots tuip), origin unknown.
tup (plural tups)
- A male sheep, a ram.
- 1790, 
- ... to tie up rams, which could not be supposed to much used to handling ... having often heard for a proverb, as mad as a tup in an halter
- The head of a hammer, and particularly of a steam-driven hammer.
- 1991, Dr J. McQuaid, "The 'Size' of the No.2 Hammer" in The Cutting Edge
- Those familiar with drop forging are accustomed to sizing drop hammers as 1 ton or 5 ton or whatever. This measure of the size is simply the weight of the tup. The total weight of the helve of No 2 is about 6.4 tons.
- (Can we date this quote?) 
- This is the modern equivalent of smith forging where the limited force of the blacksmith has been replaced by the mechanical or steam hammer. The process can be carried out by open forging where the hammer is replaced by a tup and the metal is manipulated manually on an anvil.
- (Can we date this quote?) 
- Rockwell hardness test: A method of measuring hardness. The hardness is expressed as a number related to the depth of the residual penetration. A test for determining the hardness of a material based on the depth of penetration of a specified penetrator in to the specimen under certain arbitrarily fixed condition of test. A hardness test where the loss in kinetic energy of a falling diamond tipped metal ‘tup’, absorbed by indentation upon impact of the tup on the metal being tested is indicated by the height of rebound.
tup (third-person singular simple present tups, present participle tupping, simple past and past participle tupped)
- To mate; used of a ram mating with a ewe.
- Even now, now, very now, an old black ram is tupping your white ewe.
- (Can we date this quote?) The Langley Chase Flock - explanation of tupping
- Tupping is the term used for when the rams cover the ewes. For our flock, this takes place in November when the ewes naturally come into season.
- (slang) To have sex with, to bonk, etc.
- 2001, Simon Hawke, A Mystery of Errors 
- I love her well enough to tup her, I suppose. A dangerous bit of business, that. She is as fertile as a bloody alluvial plain.
- 2003, Pierre Delattre, Woman on the Cross 
- I was the one who convinced her you would not tup her, and that if you did you would never lie with her against her will.
- (regional English, slang) To butt: said of a ram.
- (to mate): blissom, oestruate, rut
- (to have sex with): Thesaurus:copulate with
- 1902: Websters: - to butt.
- 1986: Concise Oxford: - hammer.
The Langley Chase Flock – explanation of tupping
Short for tuppence (“two pence”).
- Two pence.
Akin to Finnish tuppi.
- second-person singular imperative of tupać
(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)
tup m (feminine singular tuppa, masculine plural tups, feminine plural tuppas)
- (Rumantsch Grischun, Sursilvan, Sutsilvan, Surmiran) silly
From Proto-Slavic *tǫpъ.
tȗp (definite tȗpī, comparative tȕpljī, Cyrillic spelling ту̑п)
- blunt, dull
- obtuse (of an angle)
- dull, weak (feeling, pain, sound etc.)
- stupid, dull (person or action)
- flat (nose)
- a tuna fish.
(source: Collins Scrabble Dictionary)