cave : Idioms & Phrases

• a cave in which are found bones of extinct or recent animals, mingled sometimes with the works and bones of man. Am. Cyc.

Webster 1913

• noun drab yellowish big-eared bat that lives in caves
  pallid bat; Antrozous pallidus.
  

WordNet

• (Zoöl.), a very large fossil bear (Ursus spelæus) similar to the grizzly bear, but large; common in European caves.

Webster 1913

• noun someone who lives in a cave
  caveman; cave dweller; troglodyte.
  

WordNet

• a savage of prehistoric times whose dwelling place was a cave. Tylor.

Webster 1913

• (Zoöl.), a fossil hyena found abundanty in British caves, now usually regarded as a large variety of the living African spotted hyena.

Webster 1913

• noun the sudden collapse of something into a hollow beneath it
  subsidence.
  
• verb break down, literally or metaphorically
  collapse; founder; give; give way; break; fall in.
  
  • The wall collapsed
  • The business collapsed
  • The dam broke
  • The roof collapsed
  • The wall gave in
  • The roof finally gave under the weight of the ice

WordNet

• (Zoöl.), a fossil lion found in the caves of Europe, believed to be a large variety of the African lion.

Webster 1913

• noun someone who lives in a cave
  caveman; cave dweller; troglodyte.
  

WordNet

• noun small bat of southwest United States that lives in caves etc.
  Myotis velifer.
  

WordNet

• noun a large cave with basaltic pillars on Staffa island in Scotland
  

WordNet

• noun a national park in Kentucky having a large cavern and an underground river
  

WordNet

• . Flem. inkalven. (a) To fall in and leave a hollow, as earth on the side of a well or pit. (b) To submit; to yield. Slang

Webster 1913

• noun a national park in South Dakota featuring bison herds and limestone caverns
  

WordNet