cave-in

Short definition from Wiktionary

Noun

1. 1
   The act of something collapsing or caving in.
2. 2
   The location where something has caved in.
3. 3
   The act of relenting.
4. 4
   Misspelling of cave-in.

Verb

1. 1
   Misspelling of cave in.
2. 2
   To collapse inward or downward.
3. 3
   To relent; to grant approval against one's initial will.