first floor

American  

noun

1. the ground floor of a building.

2. the floor above the ground floor of a building.

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first floor British  

noun

1. US and Canadian term: second floor.  the floor or storey of a building immediately above the ground floor

2. another term for ground floor

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Etymology

Origin of first floor

First recorded in 1655–65

Example Sentences

The sergeant told the court Natalie was found lying on the first floor, with her head in the living room and her feet protruding into the hallway.

From BBC • Feb. 24, 2026

McKinnon designs from her studio, which occupies the first floor of her apartment in West Hollywood.

From Los Angeles Times • Feb. 18, 2026

On the first floor, the front parlor, with its wooden wainscoting and classical door frames, is more elegant after conservation restored small details in the decorative moldings.

From The Wall Street Journal • Feb. 7, 2026

Last Thursday, the Belgian brand presented its collection on the first floor of an under-construction building in the south of Paris —- a venue found by Reynolds.

From Barron's • Jan. 29, 2026

She provided the safe space of a reading room on the first floor, low-rent lodging upstairs, and an employment bureau to provide leads on jobs.

From "A Few Red Drops: The Chicago Race Riot of 1919" by Claire Hartfield