A type of orthodontic appliance attached to dental braces that aids in correcting severe bite problems.
The harness that fits on a horse's head.
The lifting gear at the head of a mine or deep well.
Anything worn on the head, such as a hat, hood, helmet, etc.
The rigging on the foresail.
A cushioned speaker placed on, over, or inside the ear, normally used in left/right pairs.