grin Definition in the Cambridge English Dictionary
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Definition of “grin” - English Dictionary

Definition of "grin" - American English Dictionary

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grinnoun [C]

 us   /ɡrɪn/
a ​widesmile: He ​flashed a ​big grin and gave us a ​thumbs up.
grin
verb [I]  us   /ɡrɪn/ (-nn-)
He grinned and ​waved to us.
(Definition of grin from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "grin" - British English Dictionary

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grinnoun [C]

uk   us   /ɡrɪn/
C2 a ​widesmile: I ​assumed things had gone well for him because he had a ​big grin on his ​face. a ​broad/​sheepish grin
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grinverb [I]

uk   us   /ɡrɪn/ (-nn-)
C2 to ​smile a ​widesmile: He grinned at me from the ​doorway. What are you grinning about?
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(Definition of grin from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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