I see star chopping out line in front (5)
I believe the answer is:
ahead
'in front' is the definition.
(synonyms)
'i see star chopping out line' is the wordplay.
I cannot quite see how this works, but
'i' could be 'a' and 'a' is found in the answer.
'line' could be 'head' (head is a kind of line) and 'head' is found within the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for ahead that I've seen before include "In the vanguard" , "In the lead, in advance" , "advanced" , "Winning" , "In front as in race" .)