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Noun indigo has 3 senses
- anil, indigo, indigotin - a blue dye obtained from plants or made synthetically
--1 is a kind of dye, dyestuff
- indigo, indigo plant, Indigofera tinctoria - deciduous subshrub of southeastern Asia having pinnate leaves and clusters of red or purple flowers; a source of indigo dye
--2 is a kind of shrub, bush
--2 is a member of Indigofera, genus Indigofera
--2 has particulars: anil, Indigofera suffruticosa, Indigofera anil
- indigo - a blue-violet color
--3 is a kind of violet, reddish blue
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