( informal ) to put a lot of effort and enthusiasm into sth that is difficult enough to keep you interested :
Choose an essay topic that you can really get your teeth into.
( informal ) to put a lot of effort and enthusiasm into sth that is difficult enough to keep you interested :
Choose an essay topic that you can really get your teeth into.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005