上廁所

上厕所
shàngcèsuǒ
to go to the bathroom

CEDICT

to go to the toilet

Wiktionary

去廁所大小便

維基詞典

Entry Composition

1 上 shàng
  1. (bound form) up; upper; above; previous
  2. first (of multiple parts)
  3. to climb; to get onto; to go up
  4. to attend (class or university)
  5. (directional complement) up
  6. (noun suffix) on; above
2 廁所 cèsuǒ toilet; lavatory

classifiers: 間, 處

Related entries

上一號 shàngyīhào
  1. (coll.) to go pee
  2. to go to the bathroom