| trench(noun, line, drain, hollow, ditch) |
| channel(noun, line, water, drain, hollow) |
| sewer(noun, drain, ditch, channel, conduit) |
| trough(noun, drain, ditch, channel, pit) |
| ditch(noun, line, drain, means, hollow) |
| drain(noun, house, shelter, ditch, channel) |
| canal(noun, line, drain, means, ditch) |
| furrow(noun, line, drain, means, ditch) |
| watercourse(noun, drain, flow, ditch, channel) |
| aqueduct(noun, conduit) |
| conduit(noun, drain, race, ditch, channel) |
| culvert(noun, ditch, conduit) |
| gully(noun, drain, ditch, channel, pit) |
| groove(noun, line, course, drain, means) |
| moat(noun, drain, ditch, channel, pit) |
| rut(noun, line, drain, hollow, ditch) |
| sluice(noun, ditch, conduit) |
| cloaca(noun, conduit) |
| cut(noun, line, drain, ditch, channel) |
| dike(noun, line, hollow, ditch, channel) |