The most common and most likely answer to this crossword clue is the 4 letter word LOUP
L
O
U
P
Buddy explains!
The straight part
We know that "dance" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dance = loup.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 LOUP mean?
LOUP noun- A mass of iron in a pasty condition gathered into a ball for the tilt hammer or rolls.