The most common and most likely answer to this crossword clue is the 8 letter word BUMPKINS
B
U
M
P
K
I
N
S
Buddy explains!
The straight part
We know that "Clowns" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case clowns = bumpkins.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 BUMPKINS mean?
BUMPKINS noun- A clumsy, unsophisticated person; a yokel.
- A short boom or spar used to extend a sail or secure a stay.