crenulate Share definition Flag verb, to masturbate with great emotion and vigor derivatives: crenulating, crenulater, I was very lonesome this weekend so in my leisure time, I decided to crenulate to memories of touching my first titty. Her name was Jen. crenulate by Joe1187 April 11, 2008 0 0 Get merch Get the crenulate mug. Buy Now — $32.95 See more merch