The hind biped (leg) of a quadruped, or all body parts situated behind the hind legs' trunk-attachment.
Either rear half of a side of beef, mutton, veal, lamb or by extension from another edible mammal.
Human behind, butt.
That part of the leg of vertebrates (or sometimes other animals) which corresponds to the human thigh in position or function; the tibia of a horse, the tarsus of a bird; the third leg-section of an insect.
The upper leg of a human, between the hip and the knee.