present participle of cave

The recreational sport of exploring caves. / An act of collapsing or caving in.

plural of caving

present participle of cave in

A large, naturally-occurring cavity formed underground or in the face of a cliff or a hillside. / A hole, depression, or gap in earth or rock, whether natural or man-made.

To surrender. / To collapse. / To hollow out or undermine. / To engage in the recreational exploration of caves.

(Britain, school slang) look out!; beware!

past participle of cave

To collapse inward or downward. / (figuratively) To relent; to grant approval against one's initial will.

The act of something collapsing or caving in. / The location where something has caved in. / (idiomatic) The act of relenting.