1
general::
cave in
AGREE
2. informal to agree to something that you were against before, after someone has persuaded you or threatened you
• At first, they refused to sign the agreement, but they caved in when they heard another firm was being approached., cave in
FALL
1. If a ceiling, roof or other structure caves in, it breaks and falls into the space below
• Because of the explosion, the roof of the building caved in, trapping several people.
Cambridge-Phrasal Verbs
3
general::
noun ADJ. deep, large | shallow, small | dark | damp, dank | rocky, mountain, underground We explored the rocky caves along the beach. | crystal, limestone VERB + CAVE explore CAVE + VERB collapse a collapsed limestone cave CAVE + NOUN ceiling, entrance, floor, mouth, roof, wall | system | art, drawing, painting | dweller PREP. in a/the ~ We took shelter in a dark, dank cave. PHRASES the ceiling/floor/roof/wall of a cave, the entrance to/mouth of a cave
Oxford Collocations Dictionary