The most common and most likely answer to this crossword clue is the 6 letter word GURGLE
I've seen this crossword clue in Financial Times
G
U
R
G
L
E
More clues leading to the result GURGLE
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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 GURGLE mean?
GURGLE noun- A gurgling sound.
- To flow with a bubbling sound.
- To make such a sound.