flume

English Thesaurus

1. watercourse that consists of an open artificial chute filled with water for power or for carrying logs (noun.artifact)

hypernym	:	watercourse, waterway,
definition	:	a conduit through which water flows (noun.artifact)

2. a narrow gorge with a stream running through it (noun.object)

hypernym	:	gorge,
definition	:	a deep ravine (usually with a river running through it) (noun.object)