the part of the leg between the hip and the knee
The thigh extends from the hip to the knee. The thigh has only one bone, the femur which is the largest bone in the human body. See the entire definition of Thigh
The hindquarters from the hip joint to the stifle.
The hindquarter from hip to stifle.
In humans the thigh is the area between the pelvis and buttocks and the knee. Anatomically, it is part of the lower limb.