From Longman Dictionary of Contemporary Englishflumeflume /fluːm/ noun [countable] a long narrow structure built for water to slide down, which is used to move water or wood, or which people slide down for fun a log flume
Examples from the Corpus
flume• Heated to 84F, it boasts flume rides, a wave machine and tropical rainstorms.• There was so much to do with the six pools, giant flumes, waterfalls, fountains and lots more.• You begin by coasting down the log flume, which makes you laugh.• So what if the fun of the log flume out-weighed the cost of it by tenfold?• You ignore the past pleasure on the log flume and space mountain.• Lifeguards at both the top and bottom of the flumes make sure the system is working.Origin flume (1100-1200) Old French flum, from Latin flumen “river” 