n 1 a  :  a joint in the middle part of the human leg that is the articulation between the femur, tibia, and patella - called also knee joint   b  :  the part of the leg that includes this joint  2 a  :  the joint in the hind leg of a 4-footed vertebrate that corresponds to the human knee  b  :  the carpal joint of the foreleg of a 4-footed vertebrate kneed adj 
 
 
 
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