- any covering for the head, especially a hat, cap, bonnet, etc.
- a protective covering for the head, as a steel helmet or football helmet.
- the parts of a harness about the animal’s head.
- Orthodontics Informal. a device worn on the head and attached by wires and elastic bands to braces in the mouth, used to create backward tension in the process of repositioning protruding teeth.
- Mining. a headframe and its machinery.
- any head covering, esp a hat
- any part of a horse’s harness that is worn on the head
- the hoisting mechanism at the pithead of a mine