Anglo-Ind. Short for TATTY sb.
1812. Maria Graham, Jrnl. Resid. India, 125 (Y.). During the hot winds tats (a kind of mat), made of the root of the koosa grass,… are placed against the doors and windows.
1837. Lett. fr. Madras (1843), 77. I have a tatt, or thick mat, at my window, which excludes the sun, and men sit outside pouring water on it all day, so that the wind … blows always cooled through the water.
