underwire
/ˈʌndɚˌwajɚ/
noun
plural
underwires
plural
underwires
Britannica Dictionary definition of UNDERWIRE
[count, noncount]
chiefly US
:
wire running through the bottom edge of a brassiere to provide support for a woman's breasts
— underwire
(chiefly US)
or British
underwired
/ˈʌndɚˌwajɚd/
adjective