The most common and most likely answer to this crossword clue is the 11 letter word CARBURETTOR
I've seen this crossword clue in The Daily Telegraph
C
A
R
B
U
R
E
T
T
O
R
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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 CARBURETTOR mean?
CARBURETTOR noun- A device in an internal combustion engine where fuel is vaporized and mixed with air prior to ignition.
- A water pipe or bong; a device or contrivance for mixing air with burning cannabis or cocaine.