Top Definition
A pair of unusually large breasts, usually reserved for those which are nicely shaped and on an attractive woman.

Pronunciation: gi-GAN-ti-cans. "Cans" should still rhyme with bans.

Can be abbreviated to "GCs" when there is a need to be discreet.
Las Vegas on a summer night is like a parade of giganticans.
by SLIPPAAA April 23, 2008

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