Definition of grin
- grinning from ear to ear
She continued to tease her brother, grinning wickedly.
grinned at the kids' fooling around in the pool
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'grin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use: before 12th centurySee Words from the same year
What made you want to look up grin? Please tell us where you read or heard it (including the quote, if possible).
allowing a liquid or gas to pass through
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