Look up poison pill in Wiktionary, the free dictionary.

Poison pill may refer to:

• Suicide pill, a physical pill for suicide by poison
• Poison pill amendment or wrecking amendment, an addition to a legislative bill that renders it ineffective
• Shareholder rights plan, also called a poison pill, a subclass of anti-takeover provisions that dilutes the attacker's power
• Poison pill (NBA), a type of player contract provision for some free agents in the National Basketball Association
• Poison pill (NFL), a type of player contract provision for some free agents in the National Football League from 1996 to 2010

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