續一切經音義 1.19

1.19

洄澓（上音回下音復尒雅曰逆流而上曰泝洄郭注云謂旋者也三蒼云澓深也謂河海旋流處也）。

Hui fu 洄澓 (The upper character is pronounced hui; the lower character is pronounced fu. The Erya states: 'To go against the current is called suhui.' Guo's commentary states: 'It refers to a swirling vortex.' The San Cang states: 'Fu means deep; it refers to the swirling eddies in rivers and seas.').