Something robust that is travelling very fast and carrying a lot of momentum, rendering it largely unstoppable and on the edge of potential catastrophe.

Something that you wouldn't want to stand in the way of.
• The bus was tanking down the hill, had to jump out the way!
• He was absolutely tanking it (with disregard to others).
by Chªrly March 29, 2012
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used when describing a bad performance on a test.
I took a test for a possible promotion today, and I know I tanked it.

Looks like I'll be working my shitty desk job the rest of my life, wordFFS/word
by Ricky Roma December 25, 2003
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A person who is extremely good at what they are doing. Usually a strong person.
-"What a goal! What a tank that guy is!"
by rufatnf June 9, 2014
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The process by which a person expels excrement into the toilet tank, instead of the bowl, resulting in a disgusting surprise when one flushes.
I'm tanking in Mr. Dookie's toilet!
by Boner and Asshole May 24, 2009
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To be forced over a medium to long distance, preferably by a huge hulking monster, ala Left 4 Dead.
"Damn, dude, I was playing football and I got tanked trying to make a touchdown."
by Dark Soul X December 16, 2009
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Usually in people with eating disorders, Tanking is drinking a large amount of water in a short time to gain weight before a weigh in.
'I've lost 2lbs, I'm going to have to do some serious tanking before my weigh in on friday.'
'She is just tanking to get out.'
by TeganR May 10, 2009
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continuously consuming alcohol with two underlying facotrs; you are overly intoxicated, and simply cannot drink any more(this should be determined by your fellow peers). "Tanked" status is quickly diminished upon vomiting.
you should've seen Karl at the house party last night- he was fucking tanked.
by kbizzy November 30, 2007
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