verb (used with object), knuck·led, knuck·ling.
- to apply oneself vigorously and earnestly; become serious: Just knuckle down for an hour or so and finish the work.
- Also knuckle under. to submit; yield.
THIS PSAT VOCABULARY QUIZ IS PERFECT PRACTICE FOR THE REAL TEST
Origin of knuckle
OTHER WORDS FROM knuckleknuckly, adjective
Example sentences from the Web for knuckle
The soldier launches into a comical strut and pretends to polish his guard box with his knuckles.Hunt To Identify Pirouetting 'Bearskin' Guardsman Who Shamed Army|Tom Sykes|September 3, 2014|DAILY BEAST
Ray seemed to understand immediately and said “Yeah,” offering his knuckles.
The left raps your knuckles, and the right cuts off your hand and serves it to you for lunch.What ‘60 Minutes’ Must Do About the Benghazi Disaster|Lloyd Grove|November 12, 2013|DAILY BEAST
And he wants the U.S. and its allies to maintain—if not strengthen—sanctions until Tehran knuckles under to that demand.Iran Hawks’ Definition of Successful Nuclear Diplomacy Is Impossible|Peter Beinart|November 11, 2013|DAILY BEAST
Maybe that was a gaffe, maybe a much-deserved rap on the Egyptian knuckles.
"Let us give her a rap over the knuckles, and disgust her with the business," said the brothers Cointet.Eve and David|Honore de Balzac
Presently Mr. Carlyle appeared and she knocked at the window with her knuckles.East Lynne|Mrs. Henry Wood
Rubbing his knuckles and feeling better than he had felt for days, he started back to the radar bridge.Danger in Deep Space|Carey Rockwell
Jacob's eyes flashed; he pressed the knuckles of one large hand hard upon the desk, and firmly shut his teeth.Fashion and Famine|Ann S. Stephens
So there's no use knicking my knuckles any more on this portable throne?Wings of the Wind|Credo Harris
British Dictionary definitions for knuckle
Derived forms of knuckleknuckly, adjective
Word Origin for knuckle
Medical definitions for knuckle
Idioms and Phrases with knuckle
In addition to the idioms beginning with knuckle
- knuckle down
- knuckle under
- rap someone's knuckles