Convoluted phrase for an angel (6)
I believe the answer is:
seraph
'an angel' is the definition.
(seraph is a kind of angel)
'convoluted phrase' is the wordplay.
'convoluted' indicates an anagram.
'phrase' anagrammed gives 'SERAPH'.
'for' is the link.
(Other definitions for seraph that I've seen before include "Angelic type" , "Angel - phrase (anag)" , "He raps the heavenly being wrongly" , "Angel with winged head of child" , "Phrase for a lofty angel" .)