firemuff Share definition Flag Used to describe either a redheaded woman or her (unshaven) pussy. "I'd never known the sweet taste of the firemuff until a Scottich lass took a liking to me over pints of Guinness one night." firemuff by Dick B December 18, 2005 0 0 Get merch Get the firemuff mug. Buy Now — $32.95 See more merch