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Definition of: grin
(grin) v. grinned, grin·ning v.i.
1. To smile broadly.
2. To draw back the lips so as to show the teeth, as in pain, rage, or foolish laughter.
—v.t.
3. To express by grinning.
—noun The act of grinning; a broad smile. [OE grennian]
—grin′ner noun
—grin′ning·ly adverb
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