earmuff
noun
Definitions
A garment to keep the ears warm.
A garment or part worn over a single ear.
A sound-deadening cup or a pair of such cups worn over the ear or ears.
noun
Definitions
Objects designed to cover a person's ears for protection against cold or noise. They consist of a thermoplastic or metal head-band, that fits over the top of the head, and a pad at each end, to cover the external ears.