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tank

1 tank /ˈtæŋk/ noun
plural tanks
1 tank
/ˈtæŋk/
noun
plural tanks
Britannica Dictionary definition of TANK
[count]
: a container for holding a liquid or gas
see pictures at car, scuba diving; see also septic tank, think tank
: the amount that a tank will hold
: a military vehicle that moves on two large metal belts with wheels inside them and that is covered in heavy armor

in/into the tank

US, informal
: in or into a very bad state or condition

— tankful

/ˈtæŋkˌfʊl/ noun, plural tankfuls [count]
2 tank /ˈtæŋk/ verb
tanks; tanked; tanking
2 tank
/ˈtæŋk/
verb
tanks; tanked; tanking
Britannica Dictionary definition of TANK
US, informal
[no object] : to be very unsuccessful : to fail completely
: to make no effort to win a contest (such as a tennis match) : to deliberately lose a game, match, etc.
[+ object]
[no object]

tank up

[phrasal verb] US, informal
: to fill a vehicle with fuel
see also tanked