definition of
knee

[1] #1 knee n. [knee joint, human knee, articulatio genus, genu] hinge joint in the human leg connecting the tibia and fibula with the femur and protected in front by the patella. wn

[2] #2 knee n. [stifle] joint between the femur and tibia in a quadruped; corresponds to the human knee. wn

[3] #3 knee n. the part of a trouser leg that provides the cloth covering for the knee. wn