A surname.

plural of Beaver

(informal) Someone who is very busy or hard-working.

The beaver Castor canadensis, native of North America.

A species of beaver, Castor fiber, native to Eurasia.

plural of American beaver

plural of European beaver

(idiomatic, colloquial) One (especially a child) who is very excited or enthusiastic to begin a task; a person who is exceedingly assiduous in an enthusiastic manner

The lodge of a beaver, in the form of a river dam with an underwater entrance.

(simile) Very busy.