ta-ta Share definition Flag 1) an extremely posh way of saying good-bye. As in ttfn 2) a woman's breast 1) Bob: see you later Angelique: Ta-ta! 2) Dat bitch got some huge ta-tas! ta-ta by toolg June 9, 2003 0 0 Get merch Get the ta-ta mug. Buy Now — $32.95 See more merch