Is “Mien” a Scrabble word?
Yes
MIEN
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 Mien
/miːn/
noun
1.Demeanor; facial expression or attitude, especially one which is intended by its bearer.
2.A specific facial expression.