Top Definition
An obscene and unsanitary derivative form of baseball popularized in New York City.

The structure of the game is largely subjective and may be modified in accordance with the wishes of its often roid-raging participants.

The term is said to have been created by illegal immigrants aboard the Colombian ship "Sepulveda" and rapidly spread to various Colombian and Dominican enclaves throughout New York City.
I hope it doesn't rain this Saturday because I've been dying to play some mierda ball.

Yo Ale, did you sign up for mierda ball this week? I didn't see your name on the list.

by GAS Captain April 14, 2009

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