A doctor seen on the French promenade (5)
I believe the answer is:
amble
'promenade' is the definition.
('amble' can be a synonym of 'promenade')
'a doctor seen on the french' is the wordplay.
'doctor' becomes 'mb' (Bachelor of Medicine, Medicinae Baccalaureus**).
'seen on' means one lot of letters go next to another.
'the french' becomes 'le'.
'a'+'mb'+'le'='AMBLE'
(Other definitions for amble that I've seen before include "Walk in a leisurely fashion" , "Relaxed walk" , "Move at an easy pace" , "Blame (anag.)" , "Make slow progress" .)