- (Canada, informal) A Canadian.
- 1849, James Edward Alexander, L'Acadie; or, Seven Years' Explorations in British America, v 1, London: Henry Colburn, pp 272–3: We saw a few partridges: we also met a lusty fellow in a forest road with a keg of whisky slung round him, who called to us ‘Come boys and have some grog, I'm what you call a canuck:’ a (Canadian).
- (chiefly, US slang, often, derogatory) A Canadian, especially a French Canadian.
- 1835, Henry Cook Todd, Notes Upon Canada and the United States, p 92: Jonathan distinguishes a Dutch or a French Canadian, by the term Kanuk.
- 1889, John G. Donkin, Trooper and Redskin in the Far North-West: Recollections of Life in the North-West Mounted Police, Canada, 1884-1888, Sampson Low, Marston, Searle, & Rivington, p 148: It is a pity these Canadian militiamen spoilt the good work they had done by never-failing bluster. But for pure and unadulterated brag I will back the lower-class Canuck against the world. The Yankee is a very sucking dove compared to his northern neighbour.
- The French-Canadian dialect.
- 1904, Holman Francis Day, “Song of the Men o' the Ax: Verse Stories of the Plain Folk Who Are Keeping Bright the Old Home Fires Up in Maine”, in Kin o' Ktaadn, p 145: On the deacon-seat in the leapin' heat / With the corn-cobs drawin' cool and sweet, / And timin' the fiddle with tunkin' feet, / A hundred men and a chorus. / “Roule, roulant, ma boule roulant,” / all Canuck but a good song; / Lift it up then, good and strong, / for a cozy night's before us.
- (rare) A thing from Canada.
- 1887: Grip (Toronto), 19 February, p 3: Who'll buy my caller herrin'? / Cod, turbot, ling, delicious herrin', / Buy my caller herrin', / They're every one Kanucks!
- (US, obsolete) A Canadian pony or horse.
- 1860, Josiah Gilbert Holland, Miss Gilbert's Career: An American Story, p 25: I'll sit here and blow till he comes round with his old go-cart, and then I'll hang on to the tail of it, and try legs with that little Kanuck of his.
- (ice hockey) A member of the Vancouver Canucks professional NHL ice hockey team.
- The Avro Canada CF-100 fighter-interceptor.
- (informal, occasionally construed as derogatory) Canadian.
- 1887, Grip (Toronto), 5 March, pp 1–2: Well, what do you think of the Canuck elections?