1. to settle conclusively
Example : They clinched the deal.
2. a tight or amorous embrace 3. a device (generally used by carpenters) that holds things firmly together 4. a small slip noose made with seizing 5. to hold in a tight grasp 6. (boxing) the act of one boxer holding onto the other to avoid being hit and to rest momentarily 7. the flattened part of a nail or bolt or rivet 8. to flatten the ends of nails and rivets
Example : They clinched the nails to secure the floorboards.
9. to secure or fasten by flattening the ends of nails or bolts
Example : The girder was clinched into the wall.
11. to hold a boxing opponent with one or both arms so as to prevent punches