cave in

US /keɪv ɪn/
UK /keɪv ɪn/
"cave in" picture
1.

to collapse or fall inward

:
•
The roof of the old mine shaft began to cave in.
•
After the earthquake, several buildings caved in.
:
collapsefall ingive waycrumblesink
2.

to yield or surrender to pressure or demands

:
•
Despite initial resistance, the government eventually caved in to public pressure.
•
He refused to cave in to their demands.
:
yieldgive insubmitsurrenderconcede
:
caveman cave