Scotch a.  Of or pertaining to Scotland, its language, or its inhabitants; Scottish.
 Scotch broom Bot., the Cytisus scoparius. See Broom.
 Scotch dipper, or Scotch duck Zool., the bufflehead; -- called also Scotch teal, and Scotchman.
 Scotch fiddle, the itch. [Low] --Sir W. Scott.
 Scotch mist, a coarse, dense mist, like fine rain.
 Scotch nightingale Zool., the sedge warbler. [Prov. Eng.]
 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.