#smear__smudge__spot__blot__daub__smirch__slur  a blemish made by dirt; "he had a smudge on his cheek"
  supertype:  blemish  a mark or flaw that spoils the appearance of something (especially on a person's body); "a facial blemish"
  subtype:  blotch__splodge  an irregularly shaped spot
  subtype:  fingermark__fingerprint  a smudge made by a (dirty) finger
  subtype:  inkblot  a blot made with ink

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