smile

  1. Noun.  A facial expression comprised by flexing the muscles of both ends of one's mouth while showing the front teeth, without vocalisation, and in humans is a common involuntary or voluntary expression of happiness, pleasure, amusement or anxiety.
  2. Verb.  (transitive) or (intransitive) To have a smile on one's face.

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This entry was last updated on RefTopia from its source on 3/20/2012.