Definition of "flue" []

• A pipe, tube, or channel for conveying hot air, gas, steam, or smoke, as from a furnace or fireplace to a chimney. (noun)
• Music An organ pipe sounded by means of a current of air striking a lip in the side of the pipe and causing the air within to vibrate. Also called labial. (noun)
• Music The lipped opening in such a pipe. (noun)
• A fishing net. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The arrows show its descent through these flues, from which it obliquely strikes and passes over the flue-plate, then under it, and then out through the centre back-flue, which is open at the bottom, up into the smoke-pipe."
• "These are three in number -- the back centre-flue, which is closed to the heat and smoke coming over the oven from the fire-box by a damper -- and the two back corner-flues."
• "The most common method of drying out tobacco leaves, called flue curing, requires an external heat source."