Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun knuckle_joint

2 senses of knuckle joint

Sense 1
knuckle, knuckle joint, metacarpophalangeal joint -- (a joint of a finger when the fist is closed)
       => synovial joint, articulatio synovialis, diarthrosis -- (a joint so articulated as to move freely)

Sense 2
knuckle joint, hinge joint -- (a joint allowing movement in one plane only)
       => joint -- (junction by which parts or objects are joined together)