cave in
Intermediate (B1)informal
To fall down and collapse inward like a roof collapsing, or to give up and agree to something after someone pressures you.
"The miners were trapped when part of the tunnel caved in above them."
Hear it in context

Tommy Surrenders To Schlatt...
TommyVODS · 124:40
Politician man's cave in

What Did Ancient Humans Actually Do All Day?
Ink Explainer · 5:38
At Blombos Cave in South Africa,

LIVE English Masterclass: Start Speaking Confident English
Speak English With Vanessa · 16:04
There's a dark cave in there.

Bold and the Beautiful - 2009 (S22 E178) FULL EPISODE 5579
The Bold and the Beautiful · 9:22
I will not cave in to extortion.

What Did Ancient Humans Actually Do All Day?
Ink Explainer · 5:57
And in 2008, in a cave in Germany,