lead-pipe cinch(redirected from a lead-pipe cinch)
A task that is easily, effortlessly, or certain to be accomplished. I've been running marathons for years now, so this 5K run will be a lead-pipe cinch for me. Everyone assumed her election would be a lead-pipe cinch, so it shocked the entire nation when she lost.
Fig. something very easy to do; something entirely certain to happen. I knew it was a lead-pie cinch that I would be selected to head the publication committee.
A certainty, an assured success. For example, "An engagement ain't always a lead-pipe cinch" (O. Henry, The Sphinx Apple, 1907). This colloquial expression is of disputed origin. It may allude to the cinch that tightly holds a horse's saddle in place, which can make it easier for the rider to succeed in a race; or it may allude to a cinch in plumbing, in which a lead pipe is fastened with a band of steel to another pipe or a fixture, making a very secure joint. [Late 1800s]