Yesbian Share definition Flag Portmanteau of "yes" and "lesbian." Usually a straight woman who agrees to have sexual relations with another woman. Farah propositioned Gia to have sex with her, and Gia accepted. Gia is a total yesbian. Yesbian by RBK4LIFE March 25, 2019 0 0 Get merch Get the Yesbian mug. Buy Now — $32.95 See more merch