thigh 
(thī)
(thī)n.
1.
a. The portion of the human leg between the hip and the knee.
b. The corresponding part of the hind leg of a quadruped or other vertebrate animal.
2. The second segment of a bird's leg, containing the tibia and fibula.
3. A cut of meat taken from this part of an animal's body, especially from poultry.
[Middle English, from Old English thēoh; see teuə- in the Appendix of Indo-European roots.]