get one’s teeth into something—(also: sink one’s teeth into something)
1. bite into smth.:
- Many a time I thought of Bobbie when I got my teeth into a bit of walrus or seal meat.
2. (coll.) deal with smth. vigorously:
- Here, get your teeth into this and see if you can manage this project.
put teeth into something—make smth. really effective:
- The legislature put teeth into the traffic law by increasing penalties and appropriating money for its proper enforcement.