Meaning of quadruple run

quadru'ple run'

Pronunciation: [key]
— Cribbage. Cribbage.
  1. a set of five cards consisting of a three-card run plus two other cards that duplicate different denominations in the run, as 5,5,6,6,7, worth 16 points.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.