Saw road agent removing wings (5)
I believe the answer is:
adage
'saw' is the definition.
('adage' can be a synonym of 'saw')
'road agent removing wings' is the wordplay.
'removing wings' indicates a hidden word (the wings can mean the sides of something).
'ADAGE' can be found hidden inside 'road agent'.
(Other definitions for adage that I've seen before include "Slogan" , "Short statement expressing a general truth" , "Old saying, maxim" , "Saying, saw" , "Dictum" .)