In Buddhism, scented water offered for purification or as an offering to Buddha. (In this religious sense it may be read こうずい; note this differs from the modern word for perfume, usually read こうすい.)
本堂の祭壇には、供え物とともに香水が供えられていた。
On the main altar, scented water was offered together with other offerings.
古い仏具の説明書に、香水（仏供用のこうずい）の使い方が書かれていた。
An instruction manual for old Buddhist implements described how to use scented water (kōzui) for offerings.