a large grouse (Lyrurus tetrix) of Europe and Asia: the male is almost entirely black
A Eurasian game bird (Tetrao tetrix syn. Lyrurus tetrix) with black plumage and white wing markings in the male and brownish barred plumage in the female.
(plural black grouses)
- A large, black bird with a lyre-shaped tail, Lyrurus tetrix (syn. Tetrao tetrix).
- attributive form of black grouse, noun.