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Wiktionary
dump job

n. 1 A corpse moved from the place of death to a place intended to obscure circumstances of the death. 2 The abandonment of an unfinished task for which the abandoner might be expected to take responsibility, especially in a fashion that makes it likely that one or more colleagues will take on its completion. 3 A dump truck.

Wikipedia
Dump job

In police work, a dump job is a type of murder in which the victim's body is transported to another location and abandoned, usually in a deserted area.

The intent of a dump job is to hide someone's association with the murder. This may be direct responsibility for the killing or involvement in surrounding circumstances.

Such cases often entail forensic difficulties.