knuckle

1. n. The joint of a finger, particularly when made prominent by the closing of the fingers. Source: opted

2. n. The kneejoint, or middle joint, of either leg of a quadruped, especially of a calf; -- formerly used of the kneejoint of a human being. Source: opted

3. n. The joint of a plant. Source: opted

4. n. The joining pars of a hinge through which the pin or rivet passes; a knuckle joint. Source: opted

5. n. A convex portion of a vessel's figure where a sudden change of shape occurs, as in a canal boat, where a nearly vertical side joins a nearly flat bottom. Source: opted

6. n. A contrivance, usually of brass or iron, and furnished with points, worn to protect the hand, to add force to a blow, and to disfigure the person struck; as, brass knuckles; -- called also knuckle duster. Source: opted

7. v. i. To yield; to submit; -- used with down, to, or under. Source: opted

8. v. t. To beat with the knuckles; to pommel. Source: opted

9. n. a joint of a finger when the fist is closed Source: wordnet

10. v. press or rub with the knuckles Source: wordnet

11. v. shoot a marble while keeping one's knuckles on the ground Source: wordnet

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