A homeless person; a vagabond.
see Wikipedia:tramp steamer
A long walk, possibly of more than one day, in a scenic or wilderness area.
A disreputable, promiscuous woman; a slut.
Of objects, stray and intrusive and unwanted
A metal plate worn by diggers under the hollow of the foot to save the shoe.
Any ship which does not have a fixed schedule or published ports of call.
To tread upon forcibly and repeatedly; to trample.
To cleanse, as clothes, by treading upon them in water.
To travel or wander through.
To hitchhike.
To walk with heavy footsteps.
To walk for a long time (usually through difficult terrain).
A zombie.
Something Z-shaped.
The name of the Latin-script letter Z.
Sleep.
To sleep or nap. (Compare zzz, catch some z's.)
To zigzag; to move with sharp alternating turns.