1.an enclosed armored military vehicle; has a cannon and moves on caterpillar treads
2.a large (usually metallic) vessel for holding gases or liquids
3.as much as a tank will hold
4.a freight car that transports liquids or gases in bulk
5.a cell for violent prisoners
1.store in a tank by causing (something) to flow into it
2.treat in a tank;
tank animal refuse