/'penthaʊs; `pɛnt,haus/
n
1 house or flat built on the roof of a tall building （高楼的）顶层房子
*[attrib 作定语] a luxury penthouse flat/apartment/suite 豪华的楼顶的公寓[单元房/一套房间].
2 sloping roof (esp for a shelter or shed) attached to the wall of a building and supported by it 庇檐, 披屋（靠墙的单坡顶）.

n[C]
[Date: 1300-1400; Language: Old French;Origin: appentis 'structure built against a wall', probably from Latin appendix ( APPENDIX); influenced by house]
a very expensive and comfortable apartment or set of rooms on the top floor of a building
　a £7 million London penthouse
penthouse apartment/flat/suite