| channel(noun, verb, support, hold, take) |
| duct(noun, thing, opening, drain, means) |
| conduit(noun, thing, course, drain, means) |
| funnel(noun, verb, support, move, hold) |
| tube(noun, thing, course, opening, drain) |
| passage(noun, verb, thing, supply, course) |
| whistle(noun, verb, music, sound, sharp) |
| pipeline(noun, thing, channel, passage, cylinder) |
| main(noun, course, opening, means, route) |
| cheep(noun, verb, sound, whistle, whine) |
| peep(noun, verb, see, regard, observe) |
| hose(noun, passage, cylinder, conduit, tube) |
| chirp(noun, verb, wait, shout, whistle) |
| line(noun, passage, cylinder, tube) |
| vent(noun, opening, stack, fan, passage) |
| warble(verb, sound, wait, shout, whistle) |
| shriek(noun, verb, cheer, call, cry) |
| shrill(verb, sound, whistle, whine, hiss) |
| sing(verb, sound, carry, whistle, whine) |
| tweet(noun, verb, sound, cheer, call) |