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
4. 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.