first floor

US /ˌfɜːrst ˈflɔːr/
UK /ˌfɜːrst ˈflɔːr/
"first floor" picture
1.

primo piano

the floor of a building at ground level or immediately above the ground floor

:
The office is on the first floor.
L'ufficio è al primo piano.
Take the elevator to the first floor.
Prendi l'ascensore per il primo piano.