續一切經音義 2.40

2.40

旋澓（下符福反三蒼曰澓深也謂河海中洄旋之處也說文云從水復聲）。

旋澓 (The second character is pronounced with the fanqie *f-*, [fu], from 符 and 福. The *Sancang* states: '澓 means deep; it refers to places of swirling currents in rivers and seas.' The *Shuowen* states: 'It takes 水 [water] as semantic and 復 as phonetic.')