Meaning of “define” - Learner’s Dictionary

define

verb [ T ] uk us /dɪˈfaɪn/
MEANING

B2 to say exactly what something means, or what someone or something is like:

Your duties are clearly defined in the contract.
Can you define what it means to be an American?
SHAPE

to show the outer edges or shape of something:

It has sharply defined edges.

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