Main Entry:

grin

Pronunciation:

\ˈgrin\

Function:

intransitive verb

Inflected Form(s):

grinned; grin·ning

Etymology:

Middle English grennen, from Old English grennian; akin to Old High German grennen to snarl

Date:

before 12th century

: 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