The Chinese word for bathroom is
浴室

yù shì

Chinese Definition

bathroom
1. 名词. 浴室、澡堂
Components
浴
1. to bathe; to wash; to take a bath
2. to bathe ((in the sun, wind, etc.))
3. bath
室
1. room (in a building or house); chamber
兩室一廳 - two rooms and one living room
2. (specifically in addresses) apartment number; flat number
3. (literary, or in compounds) family; household; clan
4. (literary, or in compounds) family member; dependent
5. (specifically, literary, or in compounds) wife
6. (literary, or in compounds) organ (part of an organism) shaped like a chamber; body cavity; ventricle
7. (literary, or in compounds) work unit; administrative unit
8. (literary, or in compounds) court; dynasty
9. (literary, or in compounds) home; house
10. (literary, or in compounds) office
11. (literary, or in compounds) coffin pit; grave
12. (literary, or in compounds) scabbard; sheath
13. (astronomy) Encampment (a Chinese constellation near Pegasus)