pump and dump

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- - pulse
  - pulse code modulation
  - pultrude
  - pulverize
  - pulverulent
  - puma
  - pumice
  - pummel
  - pummelo
  - pump
  - pump and dump
  - pump-action
  - pump-priming
  - pumpernickel
  - pumpkin
  - pumpkinseed
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Concise Oxford English Dictionary © 2008 Oxford University Press:
pump and dump

▶noun the fraudulent practice of encouraging investors to buy shares in a company in order to inflate the price artificially, and then selling one's own shares while the price is high.

'pump and dump' also found in these Oxford entries:

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"pump and dump" stock market scam

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pump and dump