ほうすいこう 放水口 LinksSentence search for 放水口Sentence search for ほうすいこうKanji details for 放, 水 and 口Edit in JMdict Noun1. waste-water port (of a dam, sewer, etc.); freeing port (on a ship)Noun2. water hose outlet (for firefighting) Discussions Log in to talk about this word.