Top Definition
Another word for dog drool. Dog breeds that commonly produce the most gundax are: Bulldogs, Bloodhounds, Boxers, Great Danes, Newfoundlands, and Saint Bernards.
Eww! That dog just got gundax all over my shoe.

I would play fetch with the dog, but his gundax covers the ball.
by LilRiotGrrrl April 27, 2009
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