同義詞
1. a ravine formed by the action of water
- ravine
- , canyon
- , gorge
- , pass
- , defile
- , couloir
- , deep narrow valley
- , gulf
- , chasm
- , abyss
- , chine
- , bunny
- , clough
- , gill
- , thrutch
- , cleuch
- , heugh
- , gulch
- , coulee
- , flume
- , sloot
- , kloof
- , donga
2. a deep artificial channel serving as a gutter or drain
- channel
- , conduit
- , trench
- , ditch
- , drain
- , culvert
- , cut
- , flume
- , gutter
- , furrow
- , groove
- , depression
