beavers
bea-vers
verb
Works extremely hard and diligently on a task, often for a long time.
"He beavers away at his desk until late."
noun
Large, semi-aquatic rodents famous for building dams and lodges.
"Wild beavers are returning to Scottish rivers."
Thesaurus
Synonyms: beaver fur, castor, top hat, high hat, stovepipe, dress hat, opera hat, topper, silk hat, beaver away, Oregonian