Scotch (?), a. [Cf. Scottish.] Of or pertaining to Scotland, its language, or its inhabitants; Scottish.
Scotch broom(Bot.), the Cytisus scoparius. See Broom. — Scotch dipper, orScotch duck(Zoöl.), the bufflehead; — called also Scotch teal, and Scotchman. — Scotch fiddle, the itch. Sir W. Scott. — Scotch mist, a coarse, dense mist, like fine rain. — Scotch nightingale(Zoöl.), the sedge warbler. — Scotch pebble. See under pebble. — Scotch pine(Bot.) See Riga fir. — Scotch thistle(Bot.), a species of thistle (Onopordon acanthium); — so called from its being the national emblem of the Scotch.