Top Definition
The counterpart to a black hole. In a black hole matter collapses inward to a singularity; in a white hole, matter pours out from a singularity. There are many similarities between the Big Bang and a white hole.
As well as black holes and white holes, relativists sometimes talk about grey holes.
by OneBadAsp October 20, 2006

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The direct opposite of a black hole. Whereas a black hole always sucks up matter, white holes always spew out matter. Just like wormholes, they're mathematically possible, but they don't exist in the real universe. At least, not in the dimensions we can perceive... Bwuhahahaha! *Twilight Zone music kicks in*
White Holes are the exact opposite of black holes.
by Bas March 07, 2005

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

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The Urban Dictionary Mug

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

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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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).

Buy the t-shirt