Definition of clinch
transitive verb
1
:clench 3
2 a
:to turn over or flatten the protruding pointed end of (a driven nail);
also
:to treat (a screw, a bolt, a rivet, etc.) in a similar way
b
:to fasten in this way
3 a
:to make final or irrefutable :settle
- that clinched the argument
b
:to assure the winning of
- scored a touchdown to clinch the game
intransitive verb
1
:to hold an opponent (as in boxing) at close quarters with one or both arms
2
:to hold fast or firmly
