Definition of

Knee

  1. (noun, animal) joint between the femur and tibia in a quadruped; corresponds to the human knee
  2. (noun, artifact) the part of a trouser leg that provides the cloth covering for the knee
  3. (noun, body) hinge joint in the human leg connecting the tibia and fibula with the femur and protected in front by the patella

via WordNet, Princeton University

Origin of the word Knee

  1. O.E. cneo, cneow "knee," from P.Gmc. *knewan (cf. O.N. kne, O.Fris. kni, M.Du. cnie, O.H.G. kniu), from PIE base *g(e)neu- (cf. Skt. janu, Avestan znum, Hittite genu "knee;" Gk. gony "knee," gonia "corner, angle;" L. genu "knee"). The verb meaning "to strike with the knee" is first record… more

via Online Etymology Dictionary, ©2001 Douglas Harper

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