ENTRESOL

ˈentə(r)ˌsäl, ˈen.trəˌs-, ˈän.trəˌs-, ˈäⁿ.trəˌs-, -sȯl noun

( -s )

Etymology: French, from entre- + sole story, floor, alteration of Old French suele, from (assumed) Vulgar Latin sola, from Latin solea sandal, sole, sill — more at sole

: mezzanine