HyperDic: knuckle_down

English > 1 sense of the expression *knuckle down*:
VERB	social	knuckle down, slave, break one's back, buckle down	work very hard, like a slave

English > *knuckle down*: 1 sense > verb 1, social
Meaning	Work very hard, like a slave.
Pattern	Somebody ----s
Synonyms	slave, break one's back, buckle down
Broader	work, do work	Be employed