'Dyestuff' definitions:

Definition of 'dyestuff'

From: WordNet
noun
A usually soluble substance for staining or coloring e.g. fabrics or hair [syn: dye, dyestuff]

Definition of 'Dyestuff'

From: GCIDE
  • Dyestuff \Dye"stuff`\, n. A material used for dyeing. [1913 Webster]