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in'digo blue'




1. indigo (def. 4).
2. Also called indigo, indigotin. a dark-blue, water-insoluble, crystalline powder, C16H10N2O2, having a bronzelike luster, the essential coloring principle of which is contained along with other substances in the dye indigo and which can be produced synthetically.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

indigoindigo bunting

 

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