1) Black cock 2) Black grouse 3) Male black grouse 4) The male of the black grouse 
• (n.) The male of the European black grouse (Tetrao tetrix, Linn.); -- so called by sportsmen. The female is called gray hen. See Heath grouse.
Black'cock` noun (Zoology) The male of the European black grouse ( Tetrao tetrix , Linn.); - - so called by sportsmen. The female is called gray hen . See Heath grouse . 
[n] - male black grouse
black cock noun male black grouse
the male of the black grouse.