Top Definition
The shadow or umbra cast by a penis or as others call it: A dick, a wand, a schlong, a schmecky, a pocket rocket, a hard-on, a stiffy ...
That guy's dick was intimidating: Even his penis umbra cast upon the wall was intimidating, thanks to the advantageously placed lighting, producing such a sharp shadow.
by badwsky February 05, 2010

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