| knuckle joint 
 
 1. a joint allowing movement in one plane only
 • Syn:
 hinge joint
 • Hypernyms:
 joint
 2. a joint of a finger when the fist is closed
 • Syn:
 knuckle, metacarpophalangeal joint
 • Derivationally related forms:
 knuckle (for: knuckle)
 • Hypernyms:
 synovial joint, articulatio synovialis, diarthrosis
 • Part Holonyms:
 finger
 
 
 |  |