(anatomy) A ridge on the surface of a teeth-bearing bone, such as maxilla and mandible in humans, that contains the tooth sockets.

Alternative spelling of armbone

A bone tool, dated to the Upper Paleolithic era, known for a series of what has been interpreted as tally marks carved in three columns running the length of the tool.

(medicine) The apparent age of a child based on the maturity of its bones.

wishbone (of a bird)

(obsolete) The shoulder blade.

An exostosis.

plural of bone spavin

Alternative spelling of backbone

An excrescence on a horse's hoof.