Thigh (?), n. [OE. thi, ih, eh, AS. eoh; akin to OFries. thiach, D. dij, dije, OHG. dioh, thioh, Icel. jo thigh, rump, and probably to Lith. taukas fat of animals, tuki to become fat, Russ. tuke fat of animals. 56.]
1. Anat.
The proximal segment of the hind limb between the knee and the trunk. See Femur.
2. Zool.
The coxa, or femur, of an insect.
Thigh bone Anat., the femur.
© Webster 1913.