noun
1. a cell for violent prisoners
Synonym: cooler
2. a large (usually metallic) vessel for holding gases or liquids
Synonym: storage tank
3. an enclosed armored military vehiclehas a cannon and moves on caterpillar treads
Synonym: army tankarmored combat vehiclearmoured combat vehicle
4. a freight car that transports liquids or gases in bulk
Synonym: tank car
5. as much as a tank will hold
Synonym: tankful