underbust

== English == === Etymology === From under- +‎ bust. === Pronunciation === === Adjective === underbust (not comparable) (clothing) Below the bust. ==== See also ==== underboob === Noun === underbust (plural underbusts) A corset that begins just under the breasts and extends down to the hips. (clothing) The circumference of a woman's chest, measured under the breasts.