couloir

cou.loir

n.（名词）
A deep mountainside gorge or gully, especially in the Swiss Alps.
峡谷：深的山谷或溪谷，尤指瑞士阿尔卑斯山的峡谷

来源：
French
法语
from couler [to slide, to flow] * see coulee
源自 couler [滑，流] *参见 coulee