Definition of stain

noun (n)

• a soiled or discolored appearance (noun.attribute)

  Synonym: discoloration, discolouration
  

  Example:
  The wine left a dark stain.
  

  source: wordnet30
• (microscopy) a dye or other coloring material that is used in microscopy to make structures visible (noun.substance)

  source: wordnet30
• the state of being covered with unclean things (noun.state)

  Synonym: dirt, filth, grease, grime, grunge, soil
  

  source: wordnet30
• a symbol of disgrace or infamy (noun.communication)

  Synonym: brand, mark, stigma
  

  source: wordnet30
• an act that brings discredit to the person who does it (noun.act)

  Synonym: blot, smear, smirch, spot
  

  source: wordnet30
• A discoloration by foreign matter; a spot; as, a stain on a garment or cloth. (noun)

  source: webster1913

verb (v)

• color with a liquid dye or tint (verb.change)

  Example:
  Stain this table a beautiful walnut color.
  People knew how to stain glass a beautiful blue in the middle ages.
  

  source: wordnet30
• produce or leave stains (verb.change)

  Example:
  Red wine stains the table cloth.
  

  source: wordnet30
• make dirty or spotty, as by exposure to air; also used metaphorically (verb.contact)

  Synonym: defile, maculate, sully, tarnish
  

  source: wordnet30
• color for microscopic study (verb.change)

  source: wordnet30
• To discolor by the application of foreign matter; to make foul; to spot; as, to stain the hand with dye; armor stained with blood. (verb)

  source: webster1913
• To give or receive a stain; to grow dim. (verb)

  source: webster1913

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