1. [ noun ] (botany) deciduous subshrub of southeastern Asia having pinnate leaves and clusters of red or purple flowers; a source of indigo dye
Synonyms: Indigofera_tinctoria indigo_plant
Related terms: shrub anil Indigofera
2. [ noun ] (color) a blue dye obtained from plants or made synthetically
Synonyms: indigotin anil
Related terms: dye
3. [ noun ] (color) a blue-violet color
Related terms: violet
Similar spelling:   indigotin