[1] : The Collaborative International Dictionary of English v.0.48

genu \ge"nu\, n.; pl. genua. l., the knee. anat.
   a the knee.
   b the kneelike bend, in the anterior part of the callosum
       of the brain.
       1913 webster
see also:
genua 

[2] : WordNet (r) 2.0

genu
     n : hinge joint in the human leg connecting the tibia and fibula
         with the femur and protected in front by the patella
         syn: knee, knee joint, articulatio genus
     also: genua pl
see also:
knee knee joint articulatio genus genua 

Genu >> G Words
Genu, definition of term: Genu
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Genu Varum >> G Words
Genu Varum, definition of term: Genu Varum
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Genu Valgum >> G Words
Genu Valgum, definition of term: Genu Valgum
genu+valgum_pag1.html