v.1. To discard or discharge something onto some other thing: We weren't allowed to dump trash on the premises. Someone dumped this package on my front porch.
2. To tell all one's problems to someone: After he was fired, he dumped his problems on me for hours. She dumped on me when her boyfriend left.
3. To criticize someone severely and unfairly: You're dumping on me because you're in a bad mood, not because I did anything wrong.
4. To assign some job to someone, often inconveniently and unfairly: The boss dumped the filing on the new employee. The most menial work was dumped on the interns.