Cor"nish, n. The dialect, or the people, of Cornwall.

Cor"nish (k?r"n?sh), a. Of or pertaining to Cornwall, in England.

Cornish chough. See Chough. -- Cornish engine, a single-acting pumping engine, used in mines, in Cornwall and elsewhere, and for water works. A heavy pump rod or plunger, raised by the steam, forces up the water by its weight, in descending.