skull

noun

1. the entire bony or cartilaginous framework of the head of a vertebrate, enclosing and protecting the brain and sense organs, including the bones of the face and jaw
2. the human head regarded as the seat of thought or intelligence: usually with derogatory implication: a thick skull, an empty skull

transitive verb

1. to hit on the head
2. to hit the top of (a golf ball) causing it to go too far