first floor
Americannoun
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the ground floor of a building.
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the floor above the ground floor of a building.
noun
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US and Canadian term: second floor. the floor or storey of a building immediately above the ground floor
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another term for ground floor
Etymology
Origin of first floor
First recorded in 1655–65
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The Smiths have a primary-bedroom suite on the first floor.
From The Wall Street Journal ● Jul. 17, 2026
Wilber Urbina Garcia tossed and turned in bed 23 on the first floor at the Adelanto ICE Detention Center.
From Los Angeles Times ● Jul. 10, 2026
By dawn, it had completely submerged the first floor of their homes.
From BBC ● Jul. 8, 2026
Together they exchanged whispers about an artist’s unknown whereabouts and whether or not they would catch him on his descent to the first floor.
From Los Angeles Times ● Jul. 7, 2026
She lived in one of the pricey rooms on the first floor with her husband, Mr. Nash, who worked as a photographer on State Street.
From "The Detective's Assistant" by Kate Hannigan
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
