a soiled or discolored appearance; the wine left a dark stain

[ Syn: discoloration , discolouration ]

(microscopy) a dye or other coloring material that is used in microscopy to make structures visible

the state of being covered with unclean things

[ Syn: dirt , filth , grime , soil , grease , grunge ]

a symbol of disgrace or infamy; And the Lord set a mark upon Cain--Genesis

[ Syn: mark , stigma , brand ]

an act that brings discredit to the person who does it; he made a huge blot on his copybook

[ Syn: blot , smear , smirch , spot ]

color with a liquid dye or tint; Stain this table a beautiful walnut color; people knew how to stain glass a beautiful blue in the middle ages'

produce or leave stains; Red wine stains the table cloth'

make dirty or spotty, as by exposure to air; also used metaphorically; The silver was tarnished by the long exposure to the air; Her reputation was sullied after the affair with a married man

[ Syn: tarnish , maculate , sully , defile ]

color for microscopic study; The laboratory worker dyed the specimen'