knuckle down
verb
(intr, adverb) informal to apply oneself diligentlyto knuckle down to some work
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seclusion
Words nearby knuckle down
knuckle, knuckleball, knuckleballer, knucklebone, knucklebones, knuckle down, knuckle-duster, knucklehead, knuckle joint, knuckle pads, knuckle sandwich
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Idioms and Phrases with knuckle down
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.
The American Heritage® Idioms Dictionary
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