Loafer found in bridle-road (5)
I believe the answer is:
idler
'loafer' is the definition.
(I know that loafer can be written as idler)
'in bridle-road' is the wordplay.
'in' indicates a hidden word.
'IDLER' can be found hidden inside 'bridle road'.
'found' is the link.
(Other definitions for idler that I've seen before include "Layabout; ship crewman not on watch" , "One reluctant to work" , "Bum" , "Time waster" , "Lollard" .)