0 an expensive apartment or set of rooms at the top of a hotel or tall building:
1 a comfortable, expensive apartment or set of rooms at the top of a hotel or tall building
Third floor 'penthouse' rooms overlook a roof garden above this bay.
The roof-line is varied by the introduction of penthouse student rooms.
Two duplex penthouses crown each structure.
He spoke of penthouses, grouse moors and yachts.
I have a very nice little office in a nineteenth-storey penthouse.
Not just painting the windows but building penthouses on the top.
Of course there are one or two penthouses there, but we did not build them; they have nothing to do with us.
The company has already built 35 flats in the boilerhouse, and all except the £1 million penthouse have been sold at prices ranging from £170,000 to £295,000.