The natural desire for babies to put everything in their mouths will occasionally result in them looking as though they are eating the head of their brother, or the cat. This gives the appearance of being a zombie, or zombaby.
Aww, look at all those cute little kids, oh no, wait, look at that, is that a cat's head in his mouth? Is he eating that cat's head? Ew, Zo, zom, zombaby!

One zombaby would be fine, but having two zombabies would harm the parents. "Nnnot enougghh heaaadddsss!"
by Epictrishax April 08, 2012

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Top Definition
A baby literally born without a brain. It twitches and spasms like a zombie.
Have you seen that article about Myah Walker and her zombaby?
by SARules April 30, 2009

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A baby zombie. Ala Dawn of the Dead. A literal zombie baby. A Zombaby
She gave birth to a Zombaby.
by Meat Poopsicle May 06, 2014

The Urban Dictionary Mug

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Lotsa space for your liquids.

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The Urban Dictionary Mug

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The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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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