beaver

US /ˈbiː.vɚ/
UK /ˈbiː.vɚ/
"beaver" picture
1.

a large, semi-aquatic rodent native to the Northern Hemisphere, known for building dams and lodges from trees and mud

:
The beaver gnawed down the tree to build its dam.
We saw a family of beavers swimming in the pond.
2.

the fur of a beaver

:
She wore a hat made of soft beaver.
The trapper sold the valuable beaver pelts.
1.

to work hard and diligently

:
He's been beavering away at his new project all night.
They beavered away to finish the report before the deadline.