IPA: /ˈɛntrəˌsoʊl/
KK: /ˈɛntrəˌsoʊl/
A level or floor in a building that is situated just above the ground floor, often used for additional space or as a mezzanine.
The office was located on the entresol, providing a great view of the street below.
**Entresol** → It is formed from "entre" (from Old French, meaning between) and "sol" (from Latin *solum*, meaning ground or floor). The word "entresol" refers to a floor or level situated between two main floors, literally meaning a space between floors.
Think of a space that is 'between' ('entre') two levels or 'floors' ('sol') — that's what an entresol is.
No commonly confused words.