A wine came into being (5)
I believe the answer is:
arose
'came into being' is the definition.
(I've seen this in another clue)
'a wine' is the wordplay.
'wine' becomes 'rose' (rose is a kind of wine).
'a'+'rose'='AROSE'
(Other definitions for arose that I've seen before include "stemmed" , "Originated (from)" , "Followed" , "Got out of bed" , "''. ... by any other name would smell as sweet'' (Romeo and Juliet)" .)