Underwire

noun, verb

noun, verb ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A semicircular wire placed in a bra to support the breasts.
  2. 2
    A bra that includes such wires.
Verb
  1. 1
    To fix such a wire in place.

Etymology

From under- + wire.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.