更衣

gēngyī
  1. to change clothes
  2. to go to the toilet (euphemism)

CEDICT

euphemistic

Entry Composition

1 更 gēng
  1. to change or replace
  2. to experience
  3. one of the five two-hour periods into which the night was formerly divided
  4. watch (e.g. of a sentry or guard)
2 衣 yī
  1. clothes
  2. Kangxi radical 145

classifier: 件