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 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
By dawn, it had completely submerged the first floor of their homes.
From BBC ● Jul. 8, 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
By the time I reached the rickety stairs leading to the first floor, my skin was clammy and my legs were shaky.
From "The Old Willis Place" by Mary Downing Hahn
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.
