Cite
 

Meaning of sit-upon

sit-up•on

Pronunciation: (sit'u-pon", -pôn"), [key]
— n.
  1. a piece of waterproof fabric or other material carried by campers, hikers, etc., and used for sitting on wet surfaces.
  2. the buttocks.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.