• (n.) A dyestuff of the induline group, made from aniline, and used as a substitute for indigo in dyeing wool and silk a violet-blue or a gray-blue color.
Vi`o·lan'i·line noun [ Viol et + aniline .] (Chemistry) A dyestuff of the induline group, made from aniline, and used as a substitute for indigo in dyeing wool and silk a violet-blue or a gray-blue color.