noun

1. Any of several fastenings.

2. The act or process of holding fast; that which serves to hold fast; a grip or grasp.

   “to get a good clinch of an antagonist, or of a weapon”

3. A pun.

verb

1. To clasp; to interlock.

2. To make certain; to finalize.

   “I already planned to buy the car, but the color was what really clinched it for me.”

3. To fasten securely or permanently.

Synonyms: attach, join, put together, clasp, grasp, grip