Is “Grin” a Scrabble word?
Yes
GRIN
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Grin
/ɡɹɪn/
noun
1.A smile in which the lips are parted to reveal the teeth.
verb
1.To smile, parting the lips so as to show the teeth.
“Why do you grin? Did I say something funny?”
2.To express by grinning.
“She grinned pleasure at his embarrassment.”
3.To show the teeth, like a snarling dog.