/ grɪn; NAmE / verb , noun
■ verb
( -nn- ) grin (at sb) to smile widely :
[ v ]
She grinned amiably at us.
They grinned with delight when they heard our news.
He was grinning from ear to ear .
[ vn ]
He grinned a welcome.
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IDIOMS
- grin and bear it
■ noun
a wide smile :
She gave a broad grin .
a wry / sheepish grin
'No,' he said with a grin .
Take that grin off your face!
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WORD ORIGIN
Old English grennian bare the teeth in pain or anger , of Germanic origin; probably related to groan .