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1.
noun

term for a very small penis, sometimes occuring from cold weather, but that is usually just an excuse.
Emily wanted 10 inches of hard cock, but she laughed when I produced my stack of dimes.
by Convict February 03, 2006
 
2.
A weld that has well defined and uniform ripples, similar to a stack of coins on an angle.
A stack of dimes is most commonly seen on aluminum bicycle frames.
by wbw5000 May 19, 2010
 
3.
A small penis or very large nipples
Her nipples looked like a stack of dimes sticking out of her blouse.
by BloggingMum October 08, 2008