penthouse
Americannoun
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an apartment or dwelling on the roof of a building, usually set back from the outer walls.
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any specially designed apartment on an upper floor, especially the top floor, of a building.
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a structure on a roof for housing elevator machinery, a water tank, etc.
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Also called pentice. Also called pent. a shed with a sloping roof, or a sloping roof, projecting from a wall or the side of a building, as to shelter a door.
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any rooflike shelter or overhanging part.
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Court Tennis. a corridor having a slanted roof and projecting from three walls of the court.
noun
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a flat or maisonette built onto the top floor or roof of a block of flats
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a construction on the roof of a building, esp one used to house machinery
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a shed built against a building, esp one that has a sloping roof
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real tennis the roofed corridor that runs along three sides of the court
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of penthouse
First recorded in 1520–30; alteration (by folk etymology) of Middle English pentis, from Old French apentiz, equivalent to apent, past participle of apendre “to hang against” + -iz ( French -is ), from unattested Vulgar Latin -ātīcium, noun use of neuter of unattested -ātīcius, equivalent to Latin -āt(us) past participle suffix + -īcius adjective suffix; see appendant, -ate 1
Explanation
A penthouse is fancy apartment on the very highest floor of a tall building. The penthouse can be a status symbol. Just ask the characters from The Jeffersons — they moved on up to a “deluxe apartment in the sky.” While you can use the word penthouse for any top floor apartment, it usually implies something luxurious. A penthouse is often the fanciest and most expensive apartment in the building. Sometimes a penthouse even has its own private elevator. The first penthouses appeared in the 1920s, some taking up entire top floors, though the word has been in use much longer. Originally, it meant "simple structure," from the Old French apentis, "attached building."
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.
Today, their beautiful Westwood Penthouse serves as a living gallery of their love story.
From Los Angeles Times • Jan. 28, 2026
The Royal Mansion Penthouse, where Beyonce once stayed, costs $100,000 a night.
From Reuters • Jun. 19, 2023
"Extraordinary Attorney Woo" follows the story of an autistic lawyer, while "The Penthouse" charts the lives of Seoul's wealthiest and often most corrupt residents.
From Salon • Feb. 20, 2023
So when he got wind of a set of pristine old recordings, captured in the mid-to-late 1960s during performances at the Penthouse club in Seattle, he hesitated.
From New York Times • Aug. 31, 2022
Not many Days ago, as the Abbé was walking on Foot, he was overtaken with a Shower of Rain, which made him take Shelter under a Penthouse, at a Shop-door.
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.
