Noun grin has 1 sense
  1. smile, smiling, grin, grinning - a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement
    --1 is a kind of facial expression, facial gesture
    --1 has particulars: smirk
    Derived form: verb grin1
,Verb grin has 1 sense
  1. grin - to draw back the lips and reveal the teeth, in a smile, grimace, or snarl
    --1 is one way to
    smile
    Derived forms: noun grinner1, noun grinning1, noun grin1
    Sample sentence:
    Somebody ----s
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