續一切經音義 2.171

2.171

洲渚（上音州下章與反爾雅曰水中可居者曰洲小洲曰渚或作陼字小陼曰沚音止）。

洲渚 (islands and islets: the first character is pronounced 州 [*zhōu*]; the second is *zh[āng]-y[ǔ]* fan. The Erya states: “Habitable land within water is called a 洲 [*zhōu*]; a small 洲 is called a 渚 [*zhǔ*].” It is also written 陼. A small 陼 is called a 沚 [*zhǐ*]; pronounced 止 [*zhǐ*]).