(anatomy) Any bone, such as the mastoid process or those of the birds, that contains many hollow cells full of air

Alternative spelling of collarbone

(medicine) A measure of the amount of mineral in bones, used to estimate the risk of osteoporosis or fractures.

(anatomy) Any of the relatively slender bones of the upper and lower extremities.

simple past tense and past participle of bone up

present participle of bone up

plural of bone marrow

The exact anatomy of an individual at the level of his bones, which varies somewhat by measurements and angles compared to the characteristic averages per species, race or other genetically defined population

plural of bone structure

(intransitive, Australia, dated, in Aboriginal culture) To place a curse on another person by pointing a bone at that person; to curse by performing a magic ritual.