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A large, naturally-occurring cavity formed underground or in the face of a cliff or a hillside.
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A hole, depression, or gap in earth or rock, whether natural or man-made.
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A storage cellar, especially for wine or cheese.
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A place of retreat, such as a man cave.
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(caving) A naturally-occurring cavity in bedrock which is large enough to be entered by an adult.
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(nuclear physics) A shielded area where nuclear experiments can be carried out.
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(drilling, uncountable) Debris, particularly broken rock, which falls into a drill hole and interferes with drilling.
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(mining) A collapse or cave-in.
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(figuratively, also slang) The vagina.
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(slang, politics, often "Cave") A group that breaks from a larger political party or faction on a particular issue.
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(obsolete) Any hollow place, or part; a cavity.
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(programming) A code cave.