#1 TAT v. [tat, intertwine] make lacework by knotting or looping. wn #2 TAT n. [cheapness, tackiness, tat, sleaze] tastelessness by virtue of being cheap and vulgar. wn #3 TAT n. [Thematic Apperception Test] a projective technique using black-and-white pictures; subjects tell a story about each picture. wn