Pedal pusher (4)
I believe the answer is:
foot
'pedal pusher' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for foot that I've seen before include "Distance to the end of a limb?" , "An imperial length or body part" , "Unit of length" , "Infantry - unit of linear measure" , "Base - unit of measurement" .)