Penthouse definition

pĕnthous
An apartment or dwelling situated on the roof of a building.
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A residence, often with a terrace, on the top floor or floors of a building.
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A small structure, esp. one with a sloping roof, attached to a larger building.
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The definition of a penthouse is an apartment, house or other accommodation that is located on the roof of a building.

An example of a penthouse is the expensive, exclusive, luxurious apartment on the 25th floor of a 25-story building that provides its occupant with an expansive view of the city.

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(sports) The sloping roof that rises from the inner wall to the outer wall surrounding three sides of the court in court tennis, off which the ball is served.
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A structure housing machinery on the roof of a building.
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A sloping roof, or, sometimes, an awning, etc. extending out from a wall or building.
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An apartment or other houselike structure built upon the roof of a building.
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A luxury apartment on an upper floor, esp. the top floor, of a building.
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(dated or historical) An outhouse or other structure (especially one with a sloping roof) attached to the outside wall of a building.
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An apartment or suite on the top floor of a tall building, especially one that is expensive or luxurious.
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Any of the sloping roofs at the side of a real tennis court.
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A shed or sloping roof attached to the side of a building or wall.
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Other Word Forms

Noun

Singular:
penthouse
Plural:
penthouses

Origin of penthouse

  • Alteration of Middle English pentis, pentace a shed attached to a wall of a building from Anglo-Norman pentiz penthouses from Old French apentiz penthouse from apent past participle of apendre to belong, depend from Medieval Latin appendere from Latin to hang, suspend append

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Anglo-Norman pentiz (“pentice"), from apendiz (“appentice"), ultimately from a suffixed form of Latin appendō (“I append").

    From Wiktionary