Third-person singular simple present indicative form of cinch.(verb)
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Use "cinches" in a sentence
"The suggestion that it was too much for the cop to ask Gates, a fragile, elderly, easily frightened man, to step out onto the porch, but instead he and a bunch of other cops should have forced his way into the house, kind of cinches it."
"I knew that I was prodding him deeply and severely, thrusting the iron into his soul with as little compunction as a Mexican _charo_ exerts when he "cinches" a heavily burdened _burro_."
"The saddle is fastened by pliant ropes, or broad belts of leather, called in the West "cinches," to fasten which securely requires some skill, as they pass through a circular ring and are secured by a hitch or peculiar knot that holds well and can be unfastened with a quick jerk."