knee

v. touch the knee; strike the knee; strengthen with a knee-shaped brace (Construction)

n. joint in the middle of the leg; covering for the knee joint; bend; brace, joint supporter (Construction)

In human anatomy, the knee is the lower extremity joint connecting the femur and the tibia. Since in humans the knee supports nearly the entire weight of the body, it is the joint most vulnerable both to acute injury and to the development of osteoarthritis.
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Knee 1. genu ; the area around the articulation of the femur and tibia. 2. any structure resembling this part of the leg. [more]Knee - Community and Resources

Noun
1. hinge joint in the human leg connecting the tibia and fibula with the femur and protected in front by the patella
(synonym) knee joint, articulatio genus, genu
(hypernym) hinge joint, ginglymus, ginglymoid joint
(part-holonym) leg
(part-meronym) patella, kneecap, kneepan
2. joint between the femur and tibia in a quadruped; corresponds to the human knee
(synonym) stifle
(hypernym) joint, articulation, articulatio
(part-holonym) hind leg
3. cloth covering consisting of the part of a trouser leg that covers the knee
(hypernym) cloth covering
(part-holonym) leg

(v. t.)
To supplicate by kneeling.
  

(n.)
The joint, or region of the joint, between the thigh and leg.
  

(n.)
In the horse and allied animals, the carpal joint, corresponding to the wrist in man.
  

(n.)
In man, the joint in the middle part of the leg.
  

(n.)
A piece of timber or metal formed with an angle somewhat in the shape of the human knee when bent.
  

(n.)
A bending of the knee, as in respect or courtesy.