Cornish \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.