Character on the bow shows great skill (7)
I believe the answer is:
prowess
'great skill' is the definition.
(I've seen this in another clue)
'character on the bow' is the wordplay.
'character' becomes 'ess' (the letter S).
'on' is a charade indicator (letters next to each other).
'the bow' becomes 'prow' (synonyms).
'ess' after 'prow' is 'PROWESS'.
'shows' is the link.
(Other definitions for prowess that I've seen before include "Skill, expertise; bravery" , "Accomplishment" , "courage" , "Acquired skill(s)" , "Mastery - talent" .)