Main entry: blot, smear, smirch, spot, stain
Definition: an act that brings discredit to the person who does it
Usage: he made a huge blot on his copybook
Main entry: discoloration, discolouration, stain
Definition: a soiled or discolored appearance
Usage: the wine left a dark stain
Main entry: stain, mark, stigma, brand
Definition: a symbol of disgrace or infamy
Usage: And the Lord set a mark upon Cain--Genesis
Main entry: dirt, soil, stain, filth, grease, grime, grunge
Definition: the state of being covered with unclean things
Main entry: stain
Definition: (microscopy) a dye or other coloring material that is used in microscopy to make structures visible
Main entry: stain
Definition: color for microscopic study
Usage: The laboratory worker dyed the specimen
Main entry: stain
Definition: color with a liquid dye or tint
Usage: Stain this table a beautiful walnut color; people knew how to stain glass a beautiful blue in the middle ages
Main entry: stain
Definition: produce or leave stains
Usage: Red wine stains the table cloth
Main entry: maculate, tarnish, sully, defile, stain
Definition: make dirty or spotty, as by exposure to air; also used metaphorically
Usage: The silver was tarnished by the long exposure to the air; Her reputation was sullied after the affair with a married man