From The Collaborative International Dictionary of English v.0.48 [gcide]:
Tatty \Tat"ty\, n.; pl. Tatties. [Hind. [.t]a[.t][.t][imac].]
A mat or screen of fibers, as of the kuskus grass, hung at a
door or window and kept wet to moisten and cool the air as it
enters. [India]
[Webster 1913 Suppl.]
From WordNet (r) 3.0 (2006) [wn]:
tatty
adj 1: showing signs of wear and tear; "a ratty old overcoat";
"shabby furniture"; "an old house with dirty windows and
tatty curtains" [syn: moth-eaten, ratty, shabby,
tatty]
2: tastelessly showy; "a flash car"; "a flashy ring"; "garish
colors"; "a gaudy costume"; "loud sport shirts"; "a
meretricious yet stylish book"; "tawdry ornaments" [syn:
brassy, cheap, flash, flashy, garish, gaudy,
gimcrack, loud, meretricious, tacky, tatty,
tawdry, trashy]