Made fun of the conductor, by the sound of it (5)
I believe the answer is:
guyed
'made fun of' is the definition.
('guy' can be a synonym of 'make fun of')
'conductor by the sound of it' is the wordplay.
'conductor' becomes 'guide' (I've seen this before).
'by the sound of it' shows a homophone (sound like).
'guide' sounds like 'GUYED'.
'the' acts as a link.
(Other definitions for guyed that I've seen before include "sent up" , "Secured with rope" , "Made fun of - kept in position by ropes" .)