The most common and most likely answer to this crossword clue is the 8 letter word SHOWGIRL
I've seen this crossword clue in The Times
S
H
O
W
G
I
R
L
More clues leading to the result SHOWGIRL
Buddy explains!

The straight part
We know that "woman dancing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case woman dancing = showgirl.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 SHOWGIRL mean?
SHOWGIRL noun- A non-starring but physically beautiful female dancer in an often lavishly produced theatrical revue; a chorine.