Top Definition
A hybrid word of "gigantic" and "undies" used to describe only the largest, narstiest, granny panties on the planet. Typically of a cheap cotton/poly blend in a sad floral design. Usually found at Walmart for 88 cents hanging on those flimsy plastic hangers.
I was at my grandma's house, and I found her dirty gigundies behind the couch. What were they doing there? Ew!
by ceterisparibus December 02, 2005
1 more definition
6 Words related to gigundies
Larger.
Dammit, Ferndock...I can't calibrate the fuzing mechanism for a 200KT nuclear weapon with a 7/16th box end wrench...gimme the gigundy one.
by harry flashman July 12, 2003

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