(slang, Canada, US) To work exceptionally hard.

present participle of dig one's heels in

using as much strength and effort as possible.

(idiomatic, figuratively) To explore or begin; to enter or get involved in tentatively and for the first time.

For one's own benefit or advantage.

to behave independently without the influence of others.

Alternative form of on one's person

Synonym of try one's wings

Synonym of try one's wings

rapidly (and sometimes unexpectedly)