Ursa Major (5,4)
I believe the answer is:
great bear
'ursa major' is the definition.
(synonyms)
This is all the clue.
(Other definitions for great bear that I've seen before include "Large animal - same as 7" , "Ursa Major" , "Plough constellation" , "star group" , "'Large ursine in the heavens (5,4)'" .)