mi·lieu 
(mĭl-y, mē-lyœ)
(mĭl-y, mē-lyœ)n. pl. mi·lieus or mi·lieux (-lyœ)
An environment or a setting.
[French, from Old French, center : mi, middle (from Latin medius; see medhyo- in the Appendix of Indo-European roots) + lieu, place (from Latin locus).]