Ring a girl about Van Morrison song (6)
I believe the answer is:
gloria
'van morrison song' is the definition.
I can't tell whether this definition defines the answer.
'ring a girl about' is the wordplay.
'ring' becomes 'o'.
'about' indicates an anagram.
'o'+'a'+'girl'='oagirl'
'oagirl' is an anagram of 'GLORIA'.
Can you help me to learn more?
(Other definitions for gloria that I've seen before include "-- Gaynor, disco diva" , "sung in church" , "contribution to mass production" , "Portion of Mass" , "Part of the Mass; name" .)