billabong

n. 死河, 死水潭

bil.la.bong

n.Australian （名词）【澳大利亚】
A dead-end channel extending from the main stream of a river.
死水潭，死河：从主河道分流出来的死水沟渠
A streambed filled with water only in the rainy season.
只在雨季有水的河床
A stagnant pool or backwater.
死水：变臭的池塘或积水处

来源：
Wiradhuri (Aboriginal language of southeast Australia) bila [river]
威拉德瑞语（澳大利亚东南部土著语言） bila [河流]
-baô [watercourse filled only after rain]
-baô [只有雨后才注满的水潭]