Top Definition
Simply, "Giant Ass Kicking Robot." Can be used in reference to any number of things, from the film "The Iron Giant" to the popular masterpiece of Japanese animation, "Voltron." Pronounced "gacker."
And then the G.A.K.R. came flyin' out of space and blew up the military base with a thousand missiles!
by Jason Besaw September 22, 2004

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