What is 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 called?

cranium — 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's 1913.)