to send a liquid or gas through a pipe to another place
send liquid/gas[transitive usually passive]
pipe something into/from/out of etc something
Eighty per cent of sewage is piped directly into the sea.
pipe something in/out/up etc
A lot of oil is piped in from Alaska.
villages with no piped water
to make a musical sound, using a pipe
make music[intransitive and transitive]APM
to decorate food, especially a cake, with lines of icing or cream
to speak or sing something in a high voice:
'Morning!' piped a cheery voice.
pipe downphrasal verb
Everybody pipe down. There's no need to shout.
pipe something ↔ inphrasal verb
tunes piped in over an acoustic system
pipe upphrasal verb
Mum suddenly piped up 'No!'