sink one's teeth intosomething

get one's teeth into something & sink one's teeth intosomething & get one's teeth in† & sink one's teeth in†

Fig. to begin to do something; to get completely involved in something. •

I can't wait to get my teeth into that Wallace job.

•

Here, sink your teeth into this and see if you can't manage this project.

•

He'll find it easier when he sinks in his teeth.