underbust
Etymology
From under- + bust.
underbust means Below the bust. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
noun
- A corset that begins just under the breasts and extends down to the hips.
- The circumference of a woman's chest, measured under the breasts.“You can measure your underbust and overbust to get an idea of bra size, but it's still just a guideline.”