tank tank /ˈtæŋk/

noun

1. () (military) an enclosed armored military vehicle; has a cannon and moves on caterpillar treads  ( armored combat vehicle [American] , armoured combat vehicle [Canadian, British] , army tank , tank )
   (military) an enclosed armored military vehicle; has a cannon and moves on caterpillar treads
     The armored tank rolled through the battlefield.
   The armored tank rolled through the battlefield.
   
   
2. () A large (usually metallic) vessel for holding gases or liquids  ( storage tank , tank )
   a large (usually metallic) vessel for holding gases or liquids
    The factory had a large tank to store water.
   The factory had a large tank to store water.
   
   
3. [Informal, N. American] A cell for violent prisoners  ( cooler [Informal] , tank [Informal, N. American] )
   a cell for violent prisoners
   
4. A freight car that transports liquids or gases in bulk  ( tank , tank car )
   a freight car that transports liquids or gases in bulk
   
   
5. As much as a tank will hold  ( tank , tankful )
   as much as a tank will hold
   

verb

1. Treat in a tank  ( tank )
   treat in a tank
    Tank animal refuse
   tank animal refuse
   
2. Consume excessive amounts of alcohol  ( tank )
   consume excessive amounts of alcohol
   
3. Store in a tank by causing (something) to flow into it  ( tank )
   store in a tank by causing (something) to flow into it