duffle cat Share definition Flag A person that lays on your lap and keeps you warm. Purring is often heard by the person laying on the lap. "I want a duffle cat to keep me warm on my long drives to the Viking's games at the Metrodome." duffle cat by EquateJersey October 5, 2013 0 0 Get merch Get the duffle cat mug. Buy Now — $32.95 See more merch