GNU Collaborative International Dictionary of English

Found one definition

1.       
   Mien (mēn), n. [F. mine; perh. from sane source as mener to lead; cf. E. demean, menace, mine, n.] Aspect; air; manner; demeanor; carriage; bearing.
   
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   Vice is a monster of so frightful mien,
   
   As, to be hated, needs but to be seen. Pope.
   
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