sink (one's) teeth in(redirected from sink their teeth in)
sink (one's) teeth in
To start doing or become involved in something with one's utmost energy, determination, or enthusiasm. I've been wanting to read this book for ages, and now I have the time to sink my teeth in properly. I'd like you to sink your teeth in a new project that I'm developing.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.