Girl carrying wine for Herb (8)
I believe the answer is:
rosemary
'for herb' is the definition.
(rosemary is a kind of herb)
'girl carrying wine' is the wordplay.
'girl' becomes 'mary' (girl's name).
'carrying' means one lot of letters go next to another (in a down clue, the bottom letters carry others).
'wine' becomes 'rose' (rose is a kind of wine).
'mary' put after 'rose' is 'ROSEMARY'.
(Other definitions for rosemary that I've seen before include "Herb for remembrance" , "-'s Baby, Roman Polanski film" , "Helps one to remember" , "Aromatic shrub" , "Evergreen flowering shrub - girl's name" .)