Call on virtuous person, making a bit of a bow (6)
I believe the answer is:
string
'a bow' is the definition.
(thesaurus)
'call on virtuous person' is the wordplay.
'call' becomes 'ring' (telephone call).
'on' is a charade indicator (letters next to each other).
'virtuous person' becomes 'st' (short for saint).
'ring' after 'st' is 'STRING'.
'making a bit of' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for string that I've seen before include "Violin wire" , "Something for tying up" , "Cord, strand, thread" , "Collectively, the racehorses trained at one stable" , "might one be plucked?" .)