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1.
A unit of measure. A technical term similar gigabyte, but much much larger.
So large in fact that no-one can comprehend its actual value.
Hey Richard, my computer has more Jiggabytes thans yours.
by dodgypete February 26, 2005
 
2.
Over 9000 gigabytes, it surpasses the amount of gigabytes or terabytes that is possible in the world, you can't destroy it.
my computer has 3 jiggabytes of memory, I WIN, because it's over 9000. :D
by Jiggerrrr December 09, 2009