Watercourse

n.

1.

(Shipbuilding) One of the holes in floor or other plates to permit water to flow through.

Noun	1.	watercourse - natural or artificial channel through which water flows
	2.	watercourse - a natural body of running water flowing on or under the earth Synonyms: stream
	3.	watercourse - a conduit through which water flows Synonyms: waterway

adolescent stream, aqueduct, arroyo, beck, bed, bourn, braided stream, branch, brook, brooklet, burn, canal, channel, conduit, course, creek, creek bed, crick, culvert, donga, dry bed, duct, flowing stream, flume, fluviation, fresh, freshet, gill, gulch, gully, gullyhole, headrace, irrigation ditch, kill, lazy stream, meandering stream, midchannel, midstream, millstream, moving road, navigable river, nullah, race, racing stream, river, river bed, riverway, rivulet, run, rundle, runlet, runnel, sike, sluice, spill stream, spillbox, spillway, stream, stream action, stream bed, streamlet, streamway, subterranean river, swash, swash channel, tailrace, wadi, water carrier, water channel, water furrow, water gap, water gate, waterway, waterworks