Hit, scratched by careless dart (4)
I believe the answer is:
dash
This clue might be a double definition.
'hit' is the first definition.
(thesaurus)
'scratched by careless dart' is the second definition.
'dash' can be an answer for 'dart' (I've seen this before). I'm unsure of the 'scratched by careless' bit.
Can you help me to learn more?
(Other definitions for dash that I've seen before include "Hurl; rush" , "Hurry; destroy (hopes)" , "Kill off (hopes)" , "scotch" , "Hyphen; small quantity" .)