a small, narrow channel, usually formed by a stream or by rain 冲沟；溪谷 The slope was still awash with water spilling down deep gullies. 那山坡依旧深壑遍布，溪水漫流。
a deep ditch 深沟；沟壑
Word Originmid 16th cent. (in the sense ‘gullet’): from French goulet, diminutive of goule ‘throat’, from Latin gula.