The most common and most likely answer to this crossword clue is the 10 letter word CONGREGATE
I've seen this crossword clue in The Daily Telegraph
C
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N
G
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A
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More clues leading to the result CONGREGATE
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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 CONGREGATE mean?
CONGREGATE verb- To collect into an assembly or assemblage; to bring into one place, or into a united body
- To come together; to assemble; to meet.
- Collective; assembled; compact.