Gin·gly·mus n.; pl. Ginglymi Anat. A hinge joint; an articulation, admitting of flexion and extension, or motion in two directions only, as the elbow and the ankle.
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ginglymus
n : a freely moving joint in which the bones are so articulated
as to allow extensive movement in one plane [syn: hinge
joint, ginglymoid joint]
[also: ginglymi (pl)]