powder rooms is powder room's Plural Form

powder room

US 
UK 
  • na.〈婉辞〉妇女盥洗室；女厕所；(军舰的)火药室
  • Web四化妆间；粉屋
Plural Form：powder rooms  

E-C

E-E

Web Definition

na.
1.
〈婉辞〉妇女盥洗室;女厕所
2.
(军舰的)火药室