underwire

[ uhn-der-wahyuh r ]
/ ˈʌn dərˌwaɪər /

noun

a wire sewn into the underside of each cup of a brassiere, used for support and shape.
a brassiere with such wires.

Origin of underwire

under- + wire

Words nearby underwire

underweight, underwent, underwhelm, underwhelming, underwing, underwire, underwithhold, underwood, underwool, underwork, underworld