Eminent boozer hanging around English group of stars (5,4)
I believe the answer is:
great bear
'group of stars' is the definition.
(I know that Great Bear is a constellation)
'eminent boozer hanging around english' is the wordplay.
'eminent' becomes 'great' (synonyms).
'boozer' becomes 'bar'.
'hanging around' is an insertion indicator.
'english' becomes 'E' (abbreviation).
'bar' enclosing 'e' is 'bear'.
'great'+'bear'='GREAT BEAR'
(Other definitions for great bear that I've seen before include "star group" , "Large animal - same as 7" , "Major stars" , "visible in the night sky" , "Plough constellation" .)