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 first floor has items from the young Obama's life, including a cast of his handprint.

From Barron's • Jun. 4, 2026

Folks living there can see live DJs, score priority festival tickets, and dance at a club on the first floor.

From The Wall Street Journal • May 19, 2026

The museum, on the first floor, is a re-creation of “Skeldale House,” down to the pint pot in which Siegfried kept the petty cash and the old central telephone.

From Los Angeles Times • May 14, 2026

A formal living room and dining room are on the first floor, as is the gorgeous kitchen with lots of shiny subway tile, marble counters, and an island with wine storage.

From MarketWatch • Mar. 25, 2026

He saw a few more students scrambling out of different parts of the building, and he was certain he saw someone climbing out of a window on the first floor.

From "Anger Is a Gift" by Mark Oshiro