tank-top

Noun

tank top (plural tank tops)

1. An item of casual clothing: a top with no sleeves.
   • The service makes available, during limited weekend hours, a handful of the company's items – cargo shorts, tank tops, and the like – to the Hamptons house guest who discovers that he can't make it to Monday without purchasing one of those weird madras patchwork blazers.2004 August 30, The New Yorker, page 38

   Synonyms:

   tank

2. The top of a ship's bilge tank, usually the lowest horizontal surface on board.