n. 25B6; noun
a central-heating pipe : TUBE, conduit, hose, main, duct, line, channel, pipeline, drain; tubing, piping, siphon.
he smokes a pipe : briar (pipe), meerschaum, chibouk; hookah, narghile, hubble-bubble, bong; Brit. churchwarden; Scottish & N. English cutty.
she was playing a pipe : WHISTLE, penny whistle, flute, recorder, fife; chanter.
regimental pipes and drums : BAGPIPES, uillean pipes; pan pipes.
25B6; verb
the beer is piped into barrels : SIPHON, feed, channel, run, convey.
programmes piped in from London : TRANSMIT, feed, patch.
he heard a tune being piped : PLAY ON A PIPE, tootle, whistle; poetic/literary flute.
a curlew piped : CHIRP, cheep, chirrup, twitter, warble, trill, peep, sing, shrill.
25A0; pipe down (informal) BE QUIET, be silent, hush, stop talking, hold one's tongue; informal shut up, shut one's mouth, button it, button one's lip, belt up, put a sock in it.