tankininoun.
A tank top combined with a bikini bottom.
Example Citation:
"The truth is, for years Go! desperately wanted to be a guitarist. And singer. It was a goal akin to, say, trying to scale Everest in flip-flops and a tankini, by which we mean utterly hopeless, given Go!'s minimal vocal range and inability to make the simplest bar chord without triple-checking the fret board."
Hayley Kaufmann, "Go! Monday," The Boston Globe, December 27, 1999