What is "ginglymus"

Ginglymus \Gin"gly*mus\, n.; pl. Ginglymi. [NL., fr. Gr. ? a hingelike joint, a ball and socket joint.] (Anat.) A hinge joint; an articulation, admitting of flexion and extension, or motion in two directions only, as the elbow and the ankle.

n. (context anatomy English) A hinge joint.

1. 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]

2. [also: ginglymi (pl)]