流水为移动的液态水。形成流水的地方包括河流、湖泊、溪涧、水龙头流下来的自来水，甚至人工拨动的水流皆是流水。
流水之作用为水分所在地加添或去除元素，为水分带来生命力，流水不腐[1]。若果为一潭死水的话，元素就会沉积、腐烂，使水分败坏。
参见
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