'Flume' definitions:

Definition of 'flume'

From: WordNet
noun
A narrow gorge with a stream running through it [syn: gulch, flume]
noun
Watercourse that consists of an open artificial chute filled with water for power or for carrying logs

Definition of 'Flume'

From: GCIDE
  • Flume \Flume\ (f;[=u]m), n. [Cf. OE. flum river, OF, flum, fr. L. flumen, fr. fluere to flow. [root]84. See Fluent.] A stream; especially, a passage channel, or conduit for the water that drives a mill wheel; or an artifical channel of water for hydraulic or placer mining; also, a chute for conveying logs or lumber down a declivity. [1913 Webster]