Pronunciation: (sit'u-pon", -pôn"), Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/sit-upon.html on line 73 [key]
1. a piece of waterproof fabric or other material carried by campers, hikers, etc., and used for sitting on wet surfaces.
2. Chiefly Brit. Informal.the buttocks.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.