clinch

About 0.45 uses per million words.

Meaning

verb To bend and hammer the point of (a nail) so it cannot be removed. .mw-parser-output .defdate{font-size:smaller}
verb To clasp; to interlock.
verb To fasten securely or permanently.
verb To make certain; to finalize.
I already planned to buy the car, but the color was what really clinched it for me.
verb To hold firmly; to clench
verb To set closely together; to close tightly.
to clinch the teeth or the fist
verb To hold a boxing opponent with one or both arms so as to avoid being hit while resting momentarily
verb To secure a spot (e.g., at the divisional championship) before the end of regular season play by having an insurmountable lead.