Top Definition
Usually, the last in a long series of martinis drinked.
*giggle* I think I had tee many martoonis. *hiccup*
by ToonGirl15 March 10, 2004

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A martini with an extremely generous amount of gin (or vodka) and practically nothing else.
A good martooni packs a wallop.
by Rob_H2734 May 24, 2017

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the 4th or 5th martini
bring me another martooni
by Anonymous October 25, 2003

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