frogan Share definition Flag This word generally applies to a grogan laid in snow or icy weater, upon where it freezes, resulting in the aptly named "frogan". My grogan became a frogan before it hit the bowl as someone left the igloo door open. frogan by Boon January 6, 2004 0 0 Get merch Get the frogan mug. Buy Now — $32.95 See more merch