Group of stars interfered with colonial’s tent (13)
I believe the answer is:
constellation
'group of stars' is the definition.
(I've seen this before)
'interfered with colonial's tent' is the wordplay.
'interfered with' is an anagram indicator.
'colonials'+'tent'='colonialstent'
'colonialstent' is an anagram of 'CONSTELLATION'.
(Other definitions for constellation that I've seen before include "Twenty-five across for instance" , "Cassiopeia, for example" , "E.g Orion, Andromeda" , "Client to salon (anag.)" , "Formation of stars" .)