| 1. | the bony framework of the head, enclosing the brain and supporting the face; the skeleton of the head. |
| 2. | the head as the center of knowledge and understanding; mind: to get literature's great ideas through our skulls. |
| 3. | Armor. the part of a helmet that covers the top of the head. |
| 4. | out of one's skull, Slang. crazy; demented. |

skull (skŭl)
n.
The bony or cartilaginous framework of the head, made up of the bones of the braincase and face; cranium.