( informal ) to begin to work hard at sth
SYN get down to :
I'm going to have to knuckle down to some serious study.
( informal ) to begin to work hard at sth
SYN get down to :
I'm going to have to knuckle down to some serious study.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005