Open a bottle before a girl's nuptial announcement (5)
I believe the answer is:
banns
'announcement' is the definition.
(I know that banns is a type of announcement)
'open a bottle before a girl's nuptial' is the wordplay.
'open' indicates taking the first letters (take the opening letter).
'before' says to put letters next to each other.
'a girl's nuptial' becomes 'anns' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
The first letter of 'bottle' is 'b'.
'b'+'anns'='BANNS'
Can you help me to learn more?
(Other definitions for banns that I've seen before include "Proclamation of intended marriage" , "Notices of marriage" , "Pre-wedding notice" , "Public announcement read in church of forthcoming marriage" , "Notice of a wedding" .)