Definition of bonne mine in English:

bonne mine

Pronunciation /ˌbɒn ˈmiːn/

noun

  • Confident or attractive outward appearance or bearing; a good show, a good front. In later use chiefly with reference to the application of cosmetics.

    "†to make a bonne mine" (Military): to put on a show of force (obsolete).

Origin

Mid 17th century. From French bonne mine good appearance, good front from bonne, feminine of bon good + mine.