knuckle joint   (TTS Sound)

The knuckle_joint has 2 Senses.

• knuckle, metacarpophalangeal joint, knuckle joint
• a joint of a finger when the fist is closed
• 握りこぶしを閉じる時の指の関節

• hinge joint, knuckle joint
• a joint allowing movement in one plane only
• 1機の飛行機のみの動きを許容するジョイント