clench

Short definition from Wiktionary

Verb

1. 1
   To grip or hold fast.
2. 2
   To close tightly.
3. 3
   Alternative form of clinch (“bend and hammer a nail”).
4. 4
   Dated form of clinch (“make certain, finalize”).

Noun

1. 1
   A tight grip.
2. 2
   Alternative form of clinch (“the act of bending and hammering the point of a nail so it cannot be removed”).
3. 3
   A seal that is applied to formed thin-wall bushings.
4. 4
   A local chapter of the Church of the SubGenius parody religion.
5. 5
   A pun.