Crayola Share definition Flag "Cr-aye-o-lah" (adjective) something or someone who acts immaturely or childish, something that is basic or someone is is young. "Stop acting so Crayola!'"You're so Crayola!" Crayola by Oryx&Crake June 18, 2009 0 0 Get merch Get the Crayola mug. Buy Now — $32.95 See more merch