An item of underwear worn to support the breasts.
One of the two vectors in the standard notation for describing quantum states in quantum mechanics, the row vector; the other (column) vector being its complex conjugate, the ket.
A one-piece swimsuit, which may cover both the chest and the crotch (as contrasted with a bikini, which consists of two pieces).
The lower part of a bikini without the upper part (i.e., topless).