The Oxford Thesaurus An A-Z Dictionary of Synonyms - pipen.

1) pipeline, tube, duct, hose, line, main, conduit, passage, conveyor, channel: The pipes are inspected regularly for corrosion. 2) briar, meerschaum, corn-cob, calabash, clay pipe, water-pipe, hookah, narghile, chibouk or chibouque, peace-pipe or pipe of peace or calumet, Colloq Irish briar, Brit hubble-bubble, US bong: He slowly tamped down the tobacco in his pipe, then lit it. 3) pan-pipe, whistle, boatswain's pipe, tooter, horn, wind, wind instrument, woodwind, brass: They play the pipes in the London Symphony. --v. 4) tootle, tweet, skirl, warble, whistle, peep, cheep: One was piping away on a flute, the other was dancing a jig. 5) transmit, deliver, channel, conduct, convey, supply: The gas is piped directly into our homes. 6) US look at, notice, spot, note, look at, Colloq get a load of: Pipe the guy trying to climb up the outside of that building. 7) pipe down. become quieter, quieten down, make less noise, hush (up) , shush (up) , whisper, Colloq belt up, shut up: I wish they'd pipe down, I can't sleep. 8) pipe up. speak (up) , say, raise one's voice, make oneself heard, offer, volunteer: Sally piped up with the correct answer from the back of the classroom.