This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
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n. The prominence of the dorsal aspect of a joint of a finger, especially of one of the joints connecting the fingers to the hand.

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

n. A cut of meat centering on the carpal or tarsal joint, as of a pig.

n. The part of a hinge through which the pin passes.

n. A sharp angle formed by the meeting of two surfaces, especially two ship's timbers.

n. Brass knuckles.

v. To press, rub, or hit with the knuckles.

v. To shoot (a marble) with the thumb over the bent forefinger.

phrasal-verb. knuckle down To apply oneself earnestly to a task.

phrasal-verb. knuckle under To yield to pressure; give in.

n. Any of the joints between the phalanges of the fingers.

n. A mechanical joint.

n. A cut of meat.

n. The curved part of the cushion at the entrance to the pockets on a cue sports table.

v. To apply pressure, or rub or massage with one's knuckles.

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

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.

n. The joint of a plant.

n. The joining parts of a hinge through which the pin or rivet passes; a knuckle joint.

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.

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; -- called also knuckle duster, knuckles or brass knuckles.

verb-intransitive. To yield; to submit; -- used with down, to, or under.

v. To beat with the knuckles; to pummel.

n. The joint of a finger, especially that between the metacarpal bone and the first phalanx.

n. The knee or knee-joint.

n. A joint, especially of veal, consisting of the part of the leg called the knee. It is the part of the animal which corresponds to the hock of a horse, or the human heel, together with more or less of the leg above this joint.

n. The joint of a plant; a node.

n. A joint of cylindrical form, with a pin as axis, as that by which the straps of a hinge are fastened together.

n. In ship-building, an acute angle on some of the timbers.

n. plural Pieces of metal, usually brass (hence specifically known as brass knuckles), worn by lawless persons over the knuckles to protect them in striking a blow, and also to make a blow more effective. See knuckle-duster.

To touch or strike with the knuckle; pommel.

To bend the knuckles; hold the knuckles (that is, the hand) close to the ground, in playing marbles: usually with down.

To apply one's self earnestly, as to a task; engage vigorously, as in work.

To submit, as in a contest; give up; yield.

n. A sharply bent loop, as of intestine, especially when imprisoned, as in a hernia.

n. In mech., the swinging leaf or hook used for the coupling device in certain automatic car-couplings, particularly in the Janney or M. C. B. (master car-builders') type. A hole is usually provided in the knuckle so that the common link-coupling may be used with it.

To apply one's self earnestly.

n. a joint of a finger when the fist is closed

v. press or rub with the knuckles

v. shoot a marble while keeping one's knuckles on the ground

"Though it was well after midnight, everyone was hustled onto a bus for what she describes as a knuckle-biting three-hour trip to their scheduled destination."

knuckled    knuckles    knuckling   

diarthrosis    synovial joint    articulatio synovialis    press    shoot   

to knuckle down    to knuckle under    to knuckle to   

knuckle duster    knuckles    brass knuckles   

knuckled    knuckling   

yield    submit    pummel   

buckle    chuckle    huckle    muckle    ruckle    suckle   

forearm    fist    thigh    fingertip    wrist    forefinger    elbow    thumb    paw    toe