cave
cave1 /keɪv/ 
noun [countable]
the entrance to a cave
cave2 verb
cave in phrasal verb
1. if the top or sides of something cave in, they fall down or inwards
cave in on
The roof of the tunnel caved in on them.
2. to finally stop opposing something, especially because someone has persuaded or threatened you
cave in to
The chairman is expected to cave in to pressure from shareholders.
| I |
noun [countable] Date: 1200-1300
Language: Old French
Origin: Latin cava, from cavus 'hollow'
a large natural hole in the side of a cliff or hill, or under the ground ⇨ caving:Language: Old French
Origin: Latin cava, from cavus 'hollow'
| II |
verb Date: 1700-1800
Origin: Probably from calve 'to cave in' (18-19 centuries), perhaps from Flemish inkalven; influenced by ⇨ cave1
Origin: Probably from calve 'to cave in' (18-19 centuries), perhaps from Flemish inkalven; influenced by ⇨ cave1
cave in phrasal verb
1. if the top or sides of something cave in, they fall down or inwards
cave in on
2. to finally stop opposing something, especially because someone has persuaded or threatened you
cave in to