Definition of "penthouse" []

• An apartment or dwelling situated on the roof of a building. (noun)
• A residence, often with a terrace, on the top floor or floors of a building. (noun)
• A structure housing machinery on the roof of a building. (noun)
• A shed or sloping roof attached to the side of a building or wall. (noun)
• 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. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "As a result of this gradual demotion to lower levels on the world’s luxury meters, the word penthouse may no longer suffice for that knock-me-out top-floor apartment."
• "Grosvenor says the penthouse is selling for HK$25,000 a square foot or about HK$208. 6 million (US$26. 9 million)."
• "Knight Frank The penthouse is listed with Knight Frank, starting at 19.7 million Swiss francs ($20.2 million)."