a person, car, or train employed in removing wreckage, debris, etc., as from railroad tracks.
3.
Also called tow car, tow truck.a vehicle equipped with a mechanical apparatus for hoisting and pulling, used to tow wrecked, disabled, or stalled automobiles.
4.
Also called housewrecker.a person whose business it is to demolish and remove houses or other buildings, as in clearing sites for other use.
5.
a person or vessel employed in recovering salvage from wrecked or disabled vessels.
6.
a person who plunders wrecks, esp. after exhibiting false signals in order to cause shipwrecks.
[rek-er] 
