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1
a large container for holding liquid or gas a hot water tank a fuel tank a fish tank (= for keeping fish in) see septic tank, think tank
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- 2
(also tankful NAmE//tæŋkfʊl//) the contents of a tank or the amount it will hold We drove there and back on one tank of gas.
- 3 a military vehicle covered with strong metal and armed with guns. It can travel over very rough ground using wheels that move inside metal belts.
Check pronunciation: tank