Synonym of balcony bra (“bra with half a cup”) / A strapped, cupless bra made of a tube of fabric with elastic bands, often as part of a camisole or swimsuit.

(derogatory, slang) stridently feminist

(physics) The product of two vectors (and optionally an operator), in Hilbert space, where the left vector is a bra and the right is a ket. Symbolised by ⟨...|...〉 (bra and ket only) or ⟨...|...|...〉 (bra, operator, ket).

A bra that is not supported by straps over the shoulders but, typically, by being underwired

An item inserted in a bra to make a breast appear larger.

A bra with pockets for inserting breast forms.

jogging bra

A brassiere designed to elevate the breasts and enhance the cleavage

A bra that is more revealing than usual, revealing more of the breast and often the nipple.

A bra, with or without straps, fitting the bust and ribcage and extending to the waist, worn with a girdle.