grinner

/ɡrɪnə(r)/
[countable] a person who grins or smiles broadly露齿而笑的人

noun [专属名词]露齿而笑的人

The old man was known as the village grinner because of his constant cheerful expression.
这位老人因为总是面带笑容而被村里人称为'笑面人'。

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