from the GNU version of the Collaborative International Dictionary of English
- n. a cave in which are found bones of extinct or recent animals, mingled sometimes with the works and bones of man.
- n. See under Bone.
from The Century Dictionary and Cyclopedia
- n. A cave in which are found bones of animals of living or extinct species, or species living only in far distant localities or a different climate within historic times, sometimes with the bones of man or other traces of his contemporaneous existence.
Sorry, no etymologies found.