Definition of grouse

• n. sing. & pl. - Any of the numerous species of gallinaceous birds of the family Tetraonidae, and subfamily Tetraoninae, inhabiting Europe, Asia, and North America. They have plump bodies, strong, well-feathered legs, and usually mottled plumage. The group includes the ptarmigans (Lagopus), having feathered feet.
• v. i. - To seek or shoot grouse.
• v. i. - To complain or grumble.