The most common and most likely answer to this crossword clue is the 5 letter word VIRGO
V
I
R
G
O
More clues leading to the result VIRGO
- Ill-tempered woman ignoring a sign
- Domineering woman misses a sign
- Content to forgive misspelled sign
- Sign right in the middle of city
- Sign of Four, taken aback by reading work
- Sign first of reports in Spanish port
- Domineering woman has thrown out a number of stars
- Sign right in the middle of Galician port
- Sign of resistance in Spanish port
- Amazon washing away a sign
Buddy explains!

The straight part
We know that "celestial maiden" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case celestial maiden = virgo.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.