Polaris' constellation (4,5)
I believe the answer is:
ursa minor
'polaris' constellation' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ursa minor that I've seen before include "Group appearing nightly" , "Paddington, for example" , "Group of stars" , "Star group" , "Little Bear constellation, to the old Romans" .)