{v.} 1. To call (sailors) away from work with a whistle. * /He piped the men down after boat drill./ 2. {slang} To stop talking; shut up; be quiet. * /"Oh, pipe down," he called./ - Often considered rude.
PIPE DOWN
Meaning of PIPE DOWN in English
Dictionary of English idioms . Словарь английских идиом. 2012