Celestial sign of a big break? (5)
I believe the answer is:
virgo
'celestial sign' is the definition.
'virgo' can be an answer for 'sign' (Virgo is an example). I'm not certain of the 'celestial' bit.
'a big break?' is the wordplay.
I cannot quite see how this works, but
'break?' could be 'go' (synonyms) and 'go' is present in the answer.
This explanation may well be incorrect...
'of' acts as a link.
Can you help me to learn more?
(Other definitions for virgo that I've seen before include "Sixth sign of zodiac" , "Star sign" , "House" , "Large constellation between Leo and Libra" , "number of stars" .)