The most common and most likely answer to this crossword clue is the 6 letter word JOKERS
I've seen this crossword clue in Independent
J
O
K
E
R
S
More clues leading to the result JOKERS
Buddy explains!

The straight part
We know that "jesters" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case jesters = jokers.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 JOKERS mean?
JOKERS noun- A person who makes jokes.
- A funny person.
- A jester.
- A playing card that features a picture of a joker (that is, a jester) and that may be used as a wild card in some card games.
- An unspecified, vaguely disreputable person.
- A man.
- A clause in a contract that undermines its apparent provisions.