Top Definition
Something added to a situation, company, deal, object, etc., to make it undesirable to takers, buyers, thieves, investors, or conquerors.
"They're planning a hostile takeover of our company, but we're taking on a huge debt which ought to serve as a poison pill and turn them off."
by anarcissie May 17, 2008

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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The actions done by a party to screw another party after a major change has been completed or in the mix.
John Doe the outstanding CEO of ABC company resigned from his job today due to a takeover bid from XYZ. This will most likey lower the stock price of the company and make it undervalued vs. XYZ's bid. John Doe's Poison Pill will make make XYZ's bid overvalued.
by John Willikins December 10, 2005

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt