Dictionary.com
definitions

flue pipe

noun
  1. an organ pipe having a flue.

Origin of flue pipe

First recorded in 1850–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for flue pipe

flue pipe

flue

noun
  1. an organ pipe or tubular instrument of the flute family whose sound is produced by the passage of air across a sharp-edged fissure in the side. This sets in motion a vibrating air column within the pipe or instrument
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012