noun

• (informal) Something that is very easy to do.
  "We thought we had a cinch on getting out by way of this cord and so we followed that."
• (informal) Something that is obvious or certain to occur; a sure thing.
  "As a matter of fact, from the look of Elmer's shoulder, it wasn't a cinch that he would ever pitch again."
• (informal) A firm hold.
  "You've got the cinch on him. You could send him to quod, and I'd send him there as quick as lightning. I'd hang him, if I could, for what he done to Lil Sarnia."

noun

• (card games) A variety of auction pitch in which a draw to improve the hand is added, and the five of trumps (called "right Pedro") and the five of the same colour (called "left Pedro", and ranking between the five and the four of trumps) are each worth five. Fifty-one points make a game.

verb

• (card games) In the game of cinch, to protect (a trick) by playing a higher trump than the five.

noun

• (chiefly Europe, technology) An RCA connector.