Pump-and-dump Definition

(finance) A form of financial fraud where the fraudster buys stocks cheaply, generates artificial excitement about those stocks to create a temporary price increase, then sells the stocks before the price goes back down.

(slang) A situation where a person has sex with a partner on a single occasion, without immediate intention of further contact or pursuing a serious relationship.

To use a breast pump and then discard the milk, typically because one has had an infection, or been drinking alcohol.

(slang) To have sex with a partner on a single occasion, without intention or prospects of further contact, or engaging in a serious relationship.