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1.
A low carb craze where traditional pizza crust is replaced with a crust made of ground meat and then topped with traditional pizza toppings.
I'm watching my carbs this week so I'm making meatza instead of pizza.
by sarah says May 03, 2006
 
2.
A pizza topped with all meat toppings available at a certain pizza place. Similar to a "Meat Lovers' Pizza" at a place like Pizza Hut, although a meatza usually has even more meat.
The meatza is sooo good... soooo much meeeaat.
by Salineraindrops August 24, 2004
 
3.
Referring to one's own male genitalia. Normally accompanied by grabbing oneself in suggested area
I got your meatza right here pal
by kena123 May 13, 2009