Top Definition
1) To lose intensity or dwindle in strength.
2) An exposed penis (peter).
Matt: "I bet I can streak through downtown with my peter out for two hours without getting arrested."
Frank: "I doubt it. After running for a half hour or so, you'll probably peter out and then the cops will catch you."
by Nicholas D March 09, 2009

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The act of dropping out of a plan or leaving a party.
James: "Sorry guys, I have to head home."
Bob: "Don't peter out on us James!"
James: "Sorry man."
by Mitsuda August 08, 2007

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.

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