Mark pursues only award (5)
I believe the answer is:
oscar
'award' is the definition.
(Academy Award)
'mark pursues only' is the wordplay.
'mark' becomes 'scar' (mark left by an injury).
'pursues' is a charade indicator (letters next to each other).
'only' becomes 'o' (this could be a standard abbreviation I've not previously seen).
'scar' after 'o' is 'OSCAR'.
Can you help me to learn more?
(Other definitions for oscar that I've seen before include "academy's prize" , "Award by the Academy of Motion Picture Arts and Sciences" , "US film award" , "Code word for O" , "Film prize" .)