from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Slang A man's suit popular during the early 1940s, characterized by full-legged, tight-cuffed trousers and a long coat with wide lapels and heavily padded, wide shoulders.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An outfit featuring a suit with broad shoulders, a long coat, and baggy trousers that taper to a tight fit at the ankles.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a flashy suit of extreme cut
Probably from an alteration of suit.(American Heritage® Dictionary of the English Language, Fourth Edition)
Zoot may be a Caló slang pronunciation of suit, thus making the term a tautology and reduplication. (Wiktionary)