any of a large number of synthetic dyes derived from aniline, usually obtained from coal tar.
Origin of aniline dye
First recorded in 1860–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
any synthetic dye originally made from raw materials, such as aniline, obtained from coal tar
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012