Dumper (noun)

1. A vehicle or machine used for dumping materials, especially waste, into a container or heap.
2. A person who discards or abandons something, especially a relationship.

Origin:

Mid 19th century: from dump, on the pattern of tender.

Examples:

1. The construction company used a large dumper to remove the rubble from the site.
2. The landfill was filled with towering mounds of waste, the result of years of dumping by the surrounding towns.
3. She felt used and discarded, like just another item in his long line of dumped possessions.
4. The dumper was heavily loaded with soil, making its way down the winding road to the quarry.
5. He was known for his tendency to dump friends and partners as soon as he grew tired of them.