Flume

(n.) A stream; especially, a passage channel, or conduit for the water that drives a mill wheel; or an artificial channel of water for hydraulic or placer mining; also, a chute for conveying logs or lumber down a declivity.

Thesaurus Entries

abysm, abyss, aqueduct, arroyo, avenue, bed, blowhole, box canyon, breach, break, canal, canyon, cavity, channel, chap, chasm, check, chimney, chink, chute, cleft, cleuch, clough, col, coulee, couloir, crack, cranny, creek bed, crevasse, crevice, culvert, cut, cwm, debouch, defile, dell, dike, ditch, donga, door, draw, dry bed, egress, emunctory, escape, estuary, excavation, exhaust, exit, fault, fissure, flaw, floodgate, fracture, furrow, gap, gape, gash, gorge, groove, gulch, gulf, gully, gullyhole, headrace, hole, incision, irrigation ditch, joint, kloof, leak, loophole, moat, notch, nullah, opening, out, outcome, outfall, outgate, outgo, outlet, pass, passage, pore, port, race, ravine, rent, rift, rime, river bed, riverway, runnel, rupture, sally port, scissure, seam, slit, slot, sluice, spillbox, spillway, spiracle, split, spout, stream bed, streamway, swash, swash channel, tailrace, tap, trench, valley, vent, ventage, venthole, void, vomitory, wadi, water carrier, water channel, water furrow, water gap, water gate, watercourse, waterway, waterworks, way out, weir