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

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

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

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

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.

A pun.

A hitch or bend by which a rope is made fast to the ring of
an anchor, or the breeching of a ship’s gun to the ringbolts.