tank

noun

• 1a large receptacle or storage chamber, especially for liquid or gas.
• the container holding the fuel supply in a motor vehicle.
• a receptacle with transparent sides in which to keep fish; an aquarium.

• 2a heavy armored fighting vehicle carrying guns and moving on a continuous articulated metal track.

  [from the use of tank as a secret code word during manufacture in 1915]

• 3North American informal a cell in a police station or jail.

verb

• 1fill the tank of a vehicle with fuel:the cars stopped to tank up
• (be/get tanked up) informal drink heavily; become drunk:they get tanked up before the game

• 2US informal fail completely, especially at great financial cost.
• [with object] North American informal (in sports) deliberately lose or fail to finish (a game):the lackluster performance prompted speculation that he tanked the second set