combe
/kuːm/(亦作coomb或coombe)
noun
1- Brit. a short valley or hollow on a hillside or coastline, especially in southern England〈英〉（尤指英国南部的）（山坡或海岸的）峡谷, 山谷。
1.1
- Geology a dry valley in a limestone or chalk escarpment【地质】狭谷, 冲沟。
词源
Old English cumb, occurring in charters in the names of places in southern England, many of which survive; of Celtic origin, related to CWM. The current general use dates from the late 16th cent.