Synonym: knuckle joint, metacarpophalangeal joint. Similar words: knuckles, cackle, tackle, fickle, sickle, heckle, freckle, hackles. Meaning: ['nʌkl] 
n. a joint of a finger when the fist is closed. v. 1. press or rub with the knuckles 2. shoot a marble while keeping one's knuckles on the ground.
n. a joint of a finger when the fist is closed. v. 1. press or rub with the knuckles 2. shoot a marble while keeping one's knuckles on the ground. 
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(91) Wainwright rubbed a knuckle along the surface of his chin.
(92) The revolutionary people of the world will never knuckle under to the threat of nuclear weapons.
(93) The authors carried out a fracture failure analysis for a steering knuckle arm, and concluded that the part failure was caused by fatigue.
(94) Place the entire steering knuckle assembly in a vise and re - drill using the # Q drill bit.
(95) On single-ended output's gear rack type diverter, a rack's end with changes the steering knuckle tie rod through the inside and outside bracket to be connected.