indigoes

noun pl. indigos or indigoes

1. a blue dye, CHNO, obtained from certain plants, esp. a plant (Indigofera tinctoria) native to India, or made synthetically, usually from aniline
2. any of a genus (Indigofera) of plants of the pea family that yield indigo
3. a deep violet blue, designated by Newton as one of the seven prismatic or primary colors

adjective