Nantoka/오수osu오수 (osu) is a Korean word meaning “wastewater; dirty water”.Meanings1wastewater2dirty waterPart of speechnounHanja汚水Related words음료수drinking water호수lake수영swimming수영복swimsuit수영장swimming pool수요일Wednesday탕수육sweet and sour pork오염pollution분수fountain강수량precipitation해수욕장beach향수perfumeStudy Korean with flashcards →