penthouse
/ˈpenthaus; `pɛntˌhaʊs/ 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）.