ORANGE STAIN

a distress signal; a bright orange, chemical dye used to discolor the water so as to attract attention from ships or airplanes. —Welcome to the SO Glossary Final approval 2-Mar-90

a distress signal; a bright orange, chemical dye used to discolor the water so as to attract attention from ships or airplanes.a distress signal; a bright orange chemical dye used to discolor the water so as to attract attention from ships or airplanes.