Cave
Part of speech: verb
Definition: To surrender. To collapse. To hollow out or undermine. To engage in the recreational exploration of caves; to spelunk. In room-and-pillar mining, to extract a deposit of rock by breaking down a pillar which had been holding it in place. To work over tailings to dress small pieces of marketable ore.
Part of speech: noun
Definition: 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. A storage cellar, especially for wine or cheese. A place of retreat, such as a man cave. A naturally-occurring cavity in bedrock which is large enough to be entered by an adult. A shielded area where nuclear experiments can be carried out. Debris, particularly broken rock, which falls into a drill hole and interferes with drilling. A collapse or cave-in. The vagina. A group that breaks from a larger political party or faction on a particular issue.
Part of speech: interjection
Definition: look out!; beware!
Example sentence: What difference is there, do you think, between those in Plato's cave who can only marvel at the shadows and images of various objects, provided they are content and don't know what they miss, and the philosopher who has emerged from the cave and sees the real things?
Spelunk
Part of speech: noun
Definition: A cave, cavern or grotto.
Part of speech: verb
Definition: To explore caves.