knuckle down to something

knuckle down (to something)

in. to get busy doing something. Please knuckle down to your studies.

Name	Pronounced	Usage
Syd	SID	English
Paulos	-	Biblical Greek
ÁSketill	-	Ancient Scandinavian
Constantina	-	Late Roman
Sousanna	-	Biblical Greek
Hadriana	-	Ancient Roman