Mr. Carnaby knuckled Dale's head as he asked him if he called that a switch.
This threat had the desired effect: Horncastle knuckled down as if by magic.
They swore they would take vengeance on him, but they knuckled under whenever they seemed to have a chance.
The plain was well-grassed, as high as Ling's knuckled knee.
And he was sick of British women, with their knuckled hands, their splayed feet.
Bitzer knuckled his forehead again, and again begged pardon.
So you have brought the mighty Bruin to his senses, and he has knuckled down to the Lion.
Mr. Harthouse inclined his head in assent, and Bitzer knuckled his forehead.
The rapping of his knuckled fist on the tabletop alongside him broke in sharply on the clamour.
"Then you'll be knuckled;" and knuckled they were, according to ancient experience.
mid-14c., knokel "finger joint; any joint of the body, especially a knobby one; morbid lump or swelling;" common Germanic (cf. Middle Low German knökel, Middle Dutch cnockel, German knöchel), literally "little bone," a diminutive of Proto-Germanic root *knuck- "bone" (cf. German Knochen "bone).
As a verb from 1740, originally in the game of marbles. To knuckle down "apply oneself earnestly" is 1864 in American English, extended from marbles (putting a knuckle on the ground in assuming the hand position preliminary to shooting); to knuckle under "submit, give in" is first recorded 1740, supposedly from the former more general sense of "knuckle" and here meaning "knee," hence "to kneel." The face-busting knuckle-duster is from 1858 (a duster was a type of protective coat worn by workmen).
knuckle knuck·le (nŭk'əl)
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.