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

See Examples For:

first floor

The landslide buried the first floor of an apartment building in the south-eastern city of Geoje on Monday morning.

From BBC ● Aug. 17, 2026

The fire, which originated on the first floor, was believed to be caused by electrical issues.

From Los Angeles Times ● Jul. 30, 2026

And my first floor kitchen, which gets great morning light.

From The Wall Street Journal ● Jul. 21, 2026

Many apartment buildings have a flimsy first floor, propped up by skinny supports to accommodate carports, garages or storefronts.

From Los Angeles Times ● Jun. 25, 2026

Sliding into my shoes, I sneak out of my room, heading down to the first floor, to the recovery room where Stella sleeps.

From "Five Feet Apart" by Rachael Lippincott