The most common and most likely answer to this crossword clue is the 4 letter word FLUE
I've seen this crossword clue in The Guardian
F
L
U
E
More clues leading to the result FLUE
- Chimney bend blocking Santa’s helper on the way back
- Virus close to waste pipe
- Fill up, oddly, in front of village’s last outlet
- Down which Father Christmas sped, did you say?
- Outlet for dispersing fuel
- Hot air it conveys moved very quickly to the audience!
- Chimney went skyward, we’re told
- Decomposed fuel outlet
- Fuel designed that deals with smoke problem
- What’s burned for power, the last of it taken up chimney
Buddy explains!
The straight part
We know that "pipe" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case pipe = flue.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does FLUE mean?
FLUE noun- A pipe or duct that carries gaseous combustion products away from the point of combustion (such as a furnace).
- An enclosed passageway in which to direct air or other gaseous current along.
- A woolly or downy substance; down, nap; a piece of this.
- In an organ flue pipe, the opening between the lower lip and the languet.
- Shallow; flat