建けん水すいけんすいMeanings1nounwaste-water container (tea ceremony)A vessel used in the Japanese tea ceremony to hold water that has been used to rinse tea bowls.茶さ道どうでは、建けん水すいに茶ちゃ碗わんをすすぐための水みずを捨すてます。In the tea ceremony, water used to rinse tea bowls is discarded into the kensui.