かみ合わせる

かみあわせるkamiawaseru

ichidan verb · transitive

1. to clench (one's teeth)
2. to grit
3. to engage (gears)
4. to set to fighting (e.g. dogs)
5. to pit against each other
6. to harmonize (an argument)
7. to reconcile
8. to bring (points) into alignment

Study it in Yanamino