Crossword Genius

Colouring substance (3)

Ross

I believe the answer is:

dye

'colouring substance' is the definition.
(I've seen this before)

This is all the clue.

(Other definitions for dye that I've seen before include "Liquid used to change colour of clothes" , "Pigment" , "Staining material" , "Hair colouring" , "Colour (fabrics)" .)

I've seen this clue in The Guardian, The Times, The Irish Times and The Telegraph.
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