ETYM Old Eng. thi, thih, theh, AS. theóh; akin to OFries. thiach, Dutch dij, dije, Old High Germ. dioh, thioh, Icel. thjô thigh, rump, and probably to Lith. taukas fat of animals, tukti to become fat, Russ. tuke fat of animals.
The part of the leg between the hip and the knee.