What does the word cinch mean?

Usage examples for cinch

  1. " 'Anyway, Doug, it's a cinch that you have made one of the greatest practical inventions of the day, ' Tony said, forgetting Mamie Sue entirely and so did Douglass, as he answered: " 'That's true, Raccoon, and if the fortune is another man's by robbery, the brains are mine. – Phyllis by Maria Thompson Daviess
  2. I would be a cinch for a fast promotion to vice president. – Inside John Barth by William W. Stuart
  3. I've got the cinch on you, Britten. – The Man Who Drove the Car by Max Pemberton
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