The most common and most likely answer to this crossword clue is the 6 letter word POLKAS
P
O
L
K
A
S
Buddy explains!

The straight part
We know that "Dances" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dances = polkas.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 POLKAS mean?
POLKAS noun- A lively dance originating in Bohemia.
- The music for this dance.
- A polka jacket.
- To dance the polka.