1. Massive waves sometimes up to a thousand feet high caused by undersea earthquakes or volcanic eruptions.

-From Japanese, port (tsu) wave (nami).

2. A large, unstopable force.

3. A character on the popular anime "Tenchi Muyo!"
"Schismatrix" is a tsunami of imagination (actual review).
by Shaper January 19, 2004
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A big easyly surfable wave
"if them pakis knew how to surf they would of survived"
by Mo Money March 04, 2005
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noun: A delicious (yet powerful) drink consisting of equal parts Absolut Citron, 7-UP, and Redbull.

Its chemical effect on the the female bloodstream is akin to a liquid (but legal) form of GHB.
'I hit her up with two tsunamis and that was all she wrote...'
by kakeman23 May 17, 2004
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While banging a woman from behind, drink a gallon of milk. Then pull out pretending to finish and vomit all over her back.
I gave your mother the tsunami and she lapped it all up.
by I_Said April 18, 2011
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When a man receives oral sex while defacating and the girl then gets hit in the face by water from the resulting splash; a blumpkin with a splash.
Sandy was surprised yet refreshed by the tsunami she gave Bob.
by jen4 March 07, 2008
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The act of leaning a large container, such as a garbage can, that is full of water against someone's door so it floods their room when they open the door.
Shannon and I are going to tsunami Leslie so that her carpet will be soaked for weeks.
by Mark from Queen's November 09, 2005
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yet another way of getting owned, pwned, xwned etc.
person1: " stop with the 'your moms face' jokes dude...."

person2: " your MOMS FACE wants me to stop the 'your moms face' jokes"

person1: "good one fag"

person2: "TSUNAMIED!!"

person1: "YOUR MOMS FACE TSUNAMIED MY PENIS LASTNIGHT!"
by oh werd January 12, 2005
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