a grouse, Lagopus lagopus scoticus, of the British Isles, a subspecies of willow ptarmigan lacking white winter plumage.
Origin of red grouse
First recorded in 1770–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for red grouse
a reddish-brown grouse, Lagopus scoticus, of upland moors of Great Britain: an important game bird
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012