What does the word cavern mean?

Usage examples for cavern

  1. It didn't take the boys long to have their wood in a blaze and as the smoke did not, as they had feared, fill the cavern, they assumed that there must be some opening above through which it escaped. – The Boy Aviators in Africa by Captain Wilbur Lawton
  2. The cavern under the ledge he had discovered by accident. – The Spirit of the Border A Romance of the Early Settlers in the Ohio Valley by Zane Grey
  3. Stay; I know, I know- a cavern. – Foul Play by Charles Reade Dion Boucicault
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