tube top noun a woman’s garment, elasticized, stretching from the waist to under the arms US,1974
She was wearing an emerald tube top, white bongo jeans, and boat sneakers. The tube top would slip an inch each time she waved at one of the sailors, and she made it a point to wave frequently as she pranced across the barroom. — Joseph Wambaugh, Floaters, p. 92, 1996