discolouration

Noun	1.	discolouration - a soiled or discolored appearance; "the wine left a dark stain" Synonyms: discoloration, stain
	2.	discolouration - the act of changing the natural color of something by making it duller or dingier or unnatural or faded Synonyms: discoloration

appearance, bloodstain, color, colour, discolor, discoloration, discolour, iron mold, iron mould, mud stain, oil stain, scorch, stain, tarnish, visual aspect