clinching

That settles something (such as an argument) definitely and conclusively.

‘Yes,’ said Dick, with such a clinching period at the end that it seemed he was never going to add another word.

There were no dreams, No phantoms in her future any more: One clinching revelation of what was One by-flash of irrevocable chance, Had acridly but honestly foretold The mystical fulfilment of a life That might have once … But that was all gone by

A clinch; a passionate embrace.

Though there are no kissings and clinchings, […]

A making certain or finalizing.

Only six weeks into the season, the top-ranked Bulldogs were undefeated at 60, but more important to Louisiana Tech was one of the earliest clinchings of a conference title in the annals of college football.

The distortion of computer tape by wrinkling.

This “clinching” can distort the tape by causing a series of creases or folds in the surface and may produce read errors.

Computer magnetic tape is designed primarily for its storage capacity, speed, and capacity to be repeatedly erased and written over. […] Bad binder can cause holes in the oxide, loose particles, or clinching of tape.