l]
noun, verb, -led, -ling.| 1. | a joint of a finger, esp. one of the articulations of a metacarpal with a phalanx. |
| 2. | the rounded prominence of such a joint when the finger is bent. |
| 3. | a joint of meat, consisting of the parts about the carpal or tarsal joint of a quadruped. |
| 4. | an angle or protrusion at the intersection of two members or surfaces, as in the timbers of a ship or in a roof. |
| 5. | brass knuckles. |
| 6. | a cylindrical projecting part on a hinge, through which an axis or pin passes; the joint of a hinge. |
| 7. | (in a wire mesh) a bend in a wire crossing another wire. |
| 8. | (on a chair arm) one of the ridges left at the front end by longitudinal flutes carved to accommodate the fingers. |
| 9. | Nautical. a pronounced edge formed by a change in the form of the shell of a hull. |
| 10. | to rub or press with the knuckles. |
| 11. | Marbles. to shoot (a marble) from the thumb and forefinger. |
| 12. | knuckle down,
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knuckle down (to (sth))
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knuckle knuck·le (nŭk'əl)
n.
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.
A rounded protuberance formed by the bones in a joint.
A kink or loop of intestine, as in a hernia.
knuckle down
Apply oneself seriously to some task or goal, as in The professor insisted that we knuckle down and get our papers in by Friday. Both this term and the rhyming synonym buckle down date from the 1860s, but the precise allusion in either is unclear.
See knuckle under.