gulch
n.（名词）
A small ravine, especially one cut by a torrent.
冲沟，激流峡谷：狭小深谷，尤指由激流冲刷而形成
来源：
Perhaps from dialectal gulch [to gush, (of land) to sink in]
可能源自 方言 gulch [涌出，（土地）陷落入]
from Middle English gulchen [to drink greedily, to spew]
源自 中古英语 gulchen [贪婪地，喷出]
