A stream of water flowing with great swiftness and impetuosity, whether from the steepness of its course, or from being temporarily flooded; more esp. applied (as in French) to a mountain stream which at times is full of rushing water and at other times is more or less dry: cf. ——Oxford English Dictionary

torrent:a large amount of water moving very quickly and strongly in a particular direction.——Longman Dictionary of Contemporary English  @en