0 in British English, the floor of a building that is two floors above ground level, or in American English, the floor that is directly above ground level:
1 in British English, on the floor of a building that is two floors above ground level, or in American English, on the floor that is directly above ground level:
a second-floor apartment
The second-floor dining area of a nearby Wendy's provided a panoramic view of the convention site.
In the morning she goes out on her second-floor balcony and looks at it.
And all this came of my falling by accident out of a second-floor window.
The Victorian house had a second-floor bedroom overlooking the park.
Single parents live in second-floor flats and would love their children to have access to a garden.
One young woman wrote to me to describe how she witnessed a young man from a hostel urinating from the second-floor window on to street.
Otherwise, a person sleeping in a first or second-floor bedroom may not hear the alarm going off on the ground floor.