Skull

The bone structure of the head that protects the brain and supports the face. It includes the cranium and the bones of the jaw.

“Skull” probably comes from a Scandinavian source, related to Old Norse “skalli,” meaning “a bald head.” The exact origin is uncertain, but it has long been used in English for the bony head. It replaced the older Old English word “hēafod‑bān,” literally “head‑bone.”