Cra"ni*um (kr?"n?-?m), n.; pl. E. Craniums (-mz), L. Crania (-). [NL., fr. Gr. ; akin to head.]
The skull of an animal; especially, that part of the skull, either cartilaginous or bony, which immediately incloses the brain; the brain case or brainpan. See Skull.
© Webster 1913.