Skull

A skull is a hard bony body part that is found in most vertebrates. It is made from a collection of irregularly-shaped bones. It serves to protect the brain and support sensory structures such as the eyes, nose, ears, and tongue. It also serves as a platform for the upper respiratory and digestive tracts.

In art, skulls often symbolize death, poison, or terror. Pirate flags consist of a skull and crossbones on a black background.