Did you mean tank?
tank
noun
°A container for liquids or gases, typically with a volume of several cubic metres.
°An armoured fighting vehicle, armed with a gun in a turret, and moving on caterpillar tracks.
verb
°To fail or fall (often used in describing the economy or the stock market); to degenerate or decline rapidly; to plummet.
°(Video game jargon) To attract the attacks of an enemy target in cooperative team-based combat, so that one's teammates can defeat the enemy in question more efficiently.
synonyms: battle tank, combat tank, armour, tango