March; vagrant (5)
I believe the answer is:
tramp
I believe this is a double definition.
'march' is the first definition.
(tramping is a kind of marching)
'vagrant' is the second definition.
(I've seen this in another clue)
(Other definitions for tramp that I've seen before include "Lady or gentleman of the road or roving ship" , "Walk heavily, as when weary, or through mud" , "one unlikely ever to have a mortgage!" , "man down on his luck" , "Heavy footsteps" .)