Source : Webster's Revised Unabridged Dictionary (1913)

Tat \Tat\, n. [Hind. t[=a]t.]
   Gunny cloth made from the fiber of the {Corchorus olitorius},
   or jute. [India]

Tat \Tat\, n. [Hind. tatt?.] (Zo["o]l.)
   A pony. [India]

Source : WordNet®

tat
     n 1: tastelessness by virtue of being cheap and vulgar [syn: {cheapness},
           {tackiness}, {sleaze}]
     2: a projective technique using black-and-white pictures;
        subjects tell a story about each picture [syn: {Thematic
        Apperception Test}]
     [also: {tatting}, {tatted}]

tat
     v : make lacework by knotting or looping [syn: {intertwine}]
     [also: {tatting}, {tatted}]