from The American Heritage® Dictionary of the English Language, 4th Edition
- n.pl. Loose knickers bagging below the knees, worn formerly for sports.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Trousers that extend four inches below the knee, traditionally associated with sports, especially golf.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. men's baggy knickers hanging below the knees; formerly worn for sports (especially golf)
From the fact that they were four inches longer than ordinary knickers.(American Heritage® Dictionary of the English Language, Fourth Edition)