(as) busy as a beaver (building a new dam) simile
Being extremely busy or hardworking
You should take a break. You have been as busy as a beaver building a new dam all day long.
I'm proud of myself for being busy as a beaver this year.
1.(adj) Very busy
2. At maximum speed, efficiency, or power
An industrious person
Very busy
Being extremely busy or hardworking
To do or solve a variety of work or problems at the same time.
This phrase dates from the 1700s. Beaver has long been associated with hard work and bustle. They work all day cutting down trees with their teeth and building dams.