放水 ほうすい Meanings Noun, する verb, Intransitive discharge of water (from a river, dam, etc.); drainage spraying water (on); hosing Kanji 放 release. Read as ホウ. 水 water. Read as スイ. Common phrases 放水を行う Words containing 放水 放水路 (ほうすいろ) flood bypass 放水砲 (ほうすいほう) water cannon 放水管 (ほうすいかん) drainpipe And 4 more. Jinuma: Japanese Dictionary · Word lists