penthouse

Definitions

General English

Construction

  • A structure on the roof of a building, usually less than one-half the projected area of the roof, and housing mechanical and electrical equipment or residents.

Real Estate

  • noun a large and usually luxurious apartment on the top floor of a building, usually one commanding an impressive view
  • noun a structure on the roof of a building that houses lift machinery, a water tank or other service equipment
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