Marksman who has a meteoric career? (8,4)
I believe the answer is:
shooting star
'marksman who has a meteoric career?' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
This is all the clue.
Can you help me to learn more?
(Other definitions for shooting star that I've seen before include "Bright meteor" , "possibly a streaker?" , "Top toxophilite" , "one that reaches meteoric heights?" , "Annie Oakley, for example" .)