From Longman Dictionary of Contemporary Englishtank topˈtank top noun [countable] 1 DCC British English a piece of clothing like a sweater, but with no sleeves2 American English a piece of clothing like a T-shirt but with no sleeves
Examples from the Corpus
tank top• Consider the image of the Mona Lisa on a tank top.• I take off my jumper and stand in my tank top, sipping a whiskey I have been bought.• She wore a red tank top, black jeans, high white sneakers.• Cindy's loose hair and sporty tank top are used to suggest a late twentieth-century femininity which is supposedly more liberated.• It looked great for about ten minutes but now it's as pertinent as the tank top. 