洩精 [泄－]

Jyutping sit3 zing1
Pinyin xiè jīng

Definitions (Wiktionary)
  1. verb
    to emit semen (as in a wet dream, etc.)
    (syn.) 梦洗, 夢遺, 梦泄, 夢洗, 夢洩, 梦遗