A decorative border or edging of hanging threads, cords, or strips, often attached to a separate band. Something that resembles such a border or edging. A marginal, peripheral, or secondary part: "They like to hang out on the geographical fringes, the seedy outposts\u201d ( James Atlas). Those members of a group or political party holding extreme views: the lunatic fringe. Any of the light or dark bands produced by the diffraction or interference of light. A fringe benefit. To decorate with or as if with a fringe: The weaver fringed the edge of the scarf. To serve as a fringe to: Ferns fringed the pool.