A pretty ordinary walker! (10)
I believe the answer is:
pedestrian
This clue could be a double definition.
'a pretty ordinary' is the first definition.
'pedestrian' can be an answer for 'ordinary' (thesaurus). I am not certain of the 'a pretty' bit.
'walker' is the second definition.
(I know that walker can be written as pedestrian)
Can you help me to learn more?
(Other definitions for pedestrian that I've seen before include "lame" , "he goes for a walk" , "footman" , "flat" , "Unimaginative" .)