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English word:    
pipe   up  

pipe up

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pipe up in WordNet English dictionary

verb
  1. utter a shrill cry
    shriek  shrill  pipe up  pipe 
  2. begin to play or sing
    pipe up 
WordNet Lexical Database v3.0, © 2006 Princeton University


pipe up in English Wiktionary

 
  1. (verb) to speak up
Wiktionary, GNU Free Documentation Licence