ridgular Share definition Flag Eighties slang: A quarter. Used back in the eighties to play video games. "Hey, I'm gonna grab a stack of ridgulars to slam over at the arcade. I'll see ya later." "Slammin' ridgulars" ridgular by Bear-uce September 14, 2011 0 0 Get merch Get the ridgular mug. Buy Now — $32.95 See more merch