An adverb, meaning "a lot" but it can be used in other contexts aswell. Cannot really describe it well but check out the examples and you should get it.
Synonyms for like a beaver
On this page, you will find 30 slang terms related to like a beaver. Some of the top words include: a lotta, flossa, OUT THE YIN-YANG, with a fine tooth comb, ginormous, and 25 more.