pipe up

pipe up idiom
Speak up, as in Finally she piped up, “I think I've got the winning ticket,” or Pipe up if you want more pancakes. This term originally referred to a high, piping tone. [Mid-1800s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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