一切經音義 50.162

50.162

湍洄（土桓反下音迴激水為湍水轉為洄激急也說文湍疾瀨也淺水流沙上也）。

Rushing rapids and whirlpools (First character: fanqie 土 [t-] + 桓 [-uan]; second character pronounced hui. Agitated water forms rapids; swirling water forms a whirlpool. Ji means turbulent. The Shuowen says: 'Tuan means swift shallows; shallow water flowing over sand').