knuckle joint

Noun
  1. is a type of: articulatio synovialis, diarthrosis, synovial joint - a joint so articulated as to move freely
    is a part of: finger - any of the terminal members of the hand (sometimes excepting the thumb)
    same as: knuckle, metacarpophalangeal joint
  2. is a type of: joint - junction by which parts or objects are joined together
    same as: hinge joint

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