dumper

Short definition from Wiktionary

Noun

1. 1
   A small vehicle often used to carry loads and material around, often on building sites; a dumpcart.
2. 2
   A dropper of refuse, particularly not in landfill or recycling sites.
3. 3
   One who dumps a boyfriend or girlfriend; the one of a romantic couple who terminates the relationship.
4. 4
   A wave that knocks a surfer into the water.
5. 5
   A program that outputs the contents of storage or a data structure.
6. 6
   A person's buttocks.

Proper noun

1. 1
   A surname.