blue gum Share definition Flag A person of African American Heritage who has a purplish hew to the dental margins. " Boy you-all doan want to get bit by one uh them Blue Gum N-Words! They bite is poisonouser than a rattlesnake!" blue gum by J E Walker April 25, 2003 0 0 Get merch Get the blue gum mug. Buy Now — $32.95 See more merch