A non-native person who comes to a country from another country to permanently settle there.
A plant or animal that establishes itself in an area where it previously did not exist.
Of or relating to immigrants or the act of immigrating.
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).