schleavage Share definition Flag When one cuts his or her neckline on a shirt so that it droops over a shoulder. Tends to be girls in sororities. Hey bro, check out that schleavaged shirt she's wearin. It's hot. Look at her shoulder. schleavage by lurpy101 March 2, 2011 0 0 Get merch Get the schleavage mug. Buy Now — $32.95 See more merch