Amble, stroll (4)
I believe the answer is:
walk
This clue is a double definition.
'amble' is the first definition.
(I know that amble is a more specific form of the action the walk)
'stroll' is the second definition.
(I know that stroll is a more specific form of the action the walk)
(Other definitions for walk that I've seen before include "Go on foot" , "Hike" , "Proceed on foot" , "Be a pedestrian" , "Travel on foot" .)