laser Share definition Flag noun: usu. plural, a light-colored line of skin due to overstreatching of elastic tissue of the skin due to obeisity or pregnancy;stretch mark "Once he took off his shirt he revealed more lasers than anyone thought existed on one man's body." laser by B.O. August 11, 2004 0 0 Get merch Get the laser mug. Buy Now — $32.95 See more merch