Meaning of “dozen” - Learner’s Dictionary

dozen

noun, determiner uk us /ˈdʌzən/

B1 twelve, or a group of twelve:

There were about a dozen people at the party.
dozens informal

a lot:

She's got dozens of friends.
→ See also a dime a dozen

(Definition of “dozen” from the Cambridge Learner’s Dictionary © Cambridge University Press)