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Definition of flue:

  1. A compartment or division of a chimney for conveying flame and smoke to the outer air.
  2. A passage way for conducting a current of fresh, foul, or heated air from one place to another.
  3. A pipe or passage for conveying flame and hot gases through surrounding water in a boiler; - distinguished from a tube which holds water and is surrounded by fire. Small flues are called fire tubes or simply tubes.
  4. An inclosed passage way for establishing and directing a current of air, gases, etc.; an air passage
  5. In an organ flue pipe, the opening between the lower lip and the languet.
  6. Light down, such as rises from cotton, fur, etc.; very fine lint or hair.


fluke, trematode worm, labial pipe, exhaust, trematode, flue pipe, good luck, good fortune.

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