1. To hold firmly; to hold fast by grasping or embracing tightly. "Clinch the pointed spear." Dryden.

2. To set closely together; to close tightly; as, to clinch the teeth or the first. Swift.

3. The bend or turn over the point of (something that has been driven trough an object), so that it will hold fast; as, to clinch a nail.

4. To make conclusive; to confirm; to establish; as, to clinch an argument. South.

CLINCH
Clinch, v. i.

Defn: To hold fast; to grasp something firmly; to seize or grasp one another.

CLINCH
Clinch, n.

1. The act or process of holding fast; that which serves to hold fast; a grip; a grasp; a clamp; a holdfast; as, to get a good clinch of an antagonist, or of a weapon; to secure anything by a clinch.

2. A pun. Pope.

3. (Naut.)