Meaning of “cave in” - Learner’s Dictionary

cave in

phrasal verb with cave uk us /keɪv/ verb

If a ceiling, roof, or other structure caves in, it breaks and falls into the space below.


to agree to something that you were against before, after someone has persuaded you or made you afraid:

The company has finally caved in to the demands of the unions.

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