say it: floom
flume is a noun meaning "a narrow gorge with a stream running through it". It is pronounced /ˈflum/ — floom. It carries 2 recorded senses.
watercourse that consists of an open artificial chute filled with water for power or for carrying logs
Forms marked are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for flume come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.