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Noun: knuckle joint  nú-kul joynt
  1. A joint of a finger when the fist is closed
    - knuckle, metacarpophalangeal joint
  2. A joint allowing movement in one plane only
    - hinge joint

Derived forms: knuckle joints

Type of: articulatio synovialis, diarthrosis, joint, synovial joint

Part of: finger

Encyclopedia: Knuckle joint