The most common and most likely answer to this crossword clue is the 10 letter word HULLABALOO
I've seen this crossword clue in The Times
H
U
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L
A
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O
More clues leading to the result HULLABALOO
- A graduate in Northern city with facilities to make a racket
- In English city a bear causes pandemonium
- Bear bearing part of ship – and a lot of noise
- A singing bear going after port — uproar!
- Fuss made by sailor coming to a toilet at far end of port
- Racket made by half-hearted pop group penetrating port facilities
- Uproar in eastern city with a second-rate potato found in curry
- Chap having a hand in large bird facility involving a degree of mayhem
- Uproar when a scholar breaks into city toilet
- A graduate invading city facilities creating uproar
Buddy explains!

The straight part
We know that "a racket" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a racket = hullabaloo.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 HULLABALOO mean?
HULLABALOO noun- A clamour, a commotion; a fuss or uproar.
- To make a commotion or uproar.