Dictionary/降水こうすいKousuiJLPT N1降水 (Kousui) is a Japanese noun meaning “rainfall, precipitation”.Meaningsnounrainfall; precipitationKanji in 降水降descend水waterRelated words水water (esp. cool or cold)下るto descend降りるto descend (e.g. a mountain)降るto fall (of rain, snow, ash, etc.)下すto make a decision下ろすto take down水口spout以降on and after飛び降りるto jump down水田(water-filled) paddy field水着bathing suit水族館aquarium (building)