• a channel for conveying water or other fluid

Synonyms: channel, conduit, trench, ditch, gully, drain, culvert, cut, flume, gutter, furrow, groove, depression

• a tube or trough for protecting electric wiring

Synonyms: channel, duct, pipe, tube, gutter, groove, furrow, trough, trench, culvert, cut, sluice, spillway, race, flume, chute, ditch, drain