• an act that brings discredit to the person who does it; "he made a huge blot on his copybook"
• a soiled or discolored appearance; "the wine left a dark Stain"
• a symbol of disgrace or infamy; "And the Lord set a mark upon Cain"--Genesis
• the state of being covered with unclean things
• (microscopy) a dye or other coloring material that is used in microscopy to make structures visible
• color for microscopic study; "The laboratory worker dyed the specimen"
• 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"

'Stain' in other languages