1. meat (especially mutton) stewed with potatoes and onions;
The Collaborative International Dictionary of English v.0.48:
Irish \I"rish\, a. [AS. [imac]risc, fr. [imac]ras the Irish. Cf.
Of or pertaining to Ireland or to its inhabitants; produced
Irish elk. (Zool.) See under Elk.
(a) (Bot.) Carrageen.
(b) A preparation of the same made into a blanc mange.
Irish poplin. See Poplin.
Irish potato, the ordinary white potato, so called because
it is a favorite article of food in Ireland.
Irish reef, or Irishman's reef (Naut.), the head of a
sail tied up.
Irish stew, meat, potatoes, and onions, cut in small pieces
WordNet (r) 3.0 (2006):
n 1: meat (especially mutton) stewed with potatoes and onions