First Known Use: before 12th century
Dictionary
grin
verb \ˈgrin\
: to smile widely
grinnedgrin·ning
Full Definition of GRIN
intransitive verb
: to draw back the lips so as to show the teeth especially in amusement or laughter; broadly : smile
— grin noun
— grin·ner noun
— grin·ning·ly \ˈgri-niŋ-lē\ adverb
See grin defined for English-language learners
See grin defined for kids
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Origin of GRIN
Middle English grennen, from Old English grennian; akin to Old High German grennen to snarl
GRINNED Defined for Kids
1grin
verb \ˈgrin\
grinnedgrin·ning
Definition of GRIN for Kids
: to smile broadly showing teeth
2grin
noun
Definition of GRIN for Kids
: a broad smile that shows teeth
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