The most common and most likely answer to this crossword clue is the 4 letter word CLOU
I've seen this crossword clue in The Times
C
L
O
U
More clues leading to the result CLOU
Buddy explains!
The straight part
We know that "Chief attraction" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case chief attraction = clou.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 CLOU mean?
CLOU noun- Something which holds the greatest attention; the chief point of interest.