pipe in
C1 neutral mixed both
In simple words
to send something in by pipe, or speak up suddenly
Literal meaning: to send in through a pipe
Meanings
1 C1 neutral
to transport a liquid, gas, heat, or sound into a place through pipes or tubes
"Fresh water is piped in from the hills."
Grammar: mixed
2 C1
idiomatic
informal
to suddenly join a conversation by speaking, often from the side or unexpectedly
"At that point, Maya piped in with a better idea."
Grammar: inseparable
Usage notes
The engineering sense is technical but straightforward. The speaking sense is informal and less common than 'chime in'.
Commonly used with
gas water music comment voice heating
Forms
Base
pipe in
I/you/we/they
3rd person
pipes in
he/she/it
Past simple
piped in
yesterday
Past participle
piped in
have + pp
-ing form
piping in
continuous
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Synonyms
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