beaver

Universal Words noun, verb noun 1 [C] an animal with a wide flat tail and strong teeth. Beavers live in water and on land and can build DAMS (= barriers across rivers), made of pieces of wood and mud. seealsoEAGERBEAVER 2 [U] the fur of the beaver, used in making hats and clothes verb PHRASALVERBS beaver away (at sth) (informal) to work very hard at sth: He's been beavering away at the accounts all morning.