verb (used with object), o·ver·dyed, o·ver·dy·ing.
Origin of overdye
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
to dye (a fabric, yarn, etc) excessively
to dye for a second or third time with a different colour
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