knuckle (redirected from knuckles under)

knuckle /knuck·le/ (nuk´'l) the dorsal aspect of any phalangeal joint, or any similarly bent structure.

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knuck·le (nkl)

n.

1. The prominence of the dorsal aspect of a joint of a finger, especially of one of the joints that connect the fingers to the hand.

2. A rounded protuberance formed by the bones in a joint.

3. A kink or loop of intestine, as in a hernia.

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knuckle

1. the dorsal aspect of any human interphalangeal joint, or any similarly bent structure.

2. the swollen end of any long bone.