The most common and most likely answer to this crossword clue is the 9 letter word MOONWALKS
I've seen this crossword clue in The Daily Telegraph
M
O
O
N
W
A
L
K
S
More clues leading to the result MOONWALKS
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 = moonwalks.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 MOONWALKS mean?
MOONWALKS noun- An exploration of the Moon's surface on foot (by an astronaut).
- A dance move in which the dancer slides backwards though the feet move as if walking forwards; the backslide.
- A dance style in which the dancer appears to be moving in a low gravity environment.
- To walk on the surface of the Moon.
- To walk in leaps, like on the Moon or on other low gravity surfaces.
- To perform the moonwalk.
- To walk in a manner that is similar to the moonwalk dance style; to move while sliding backwards as though the feet move as if one was walking forwards.