- a container for holding a liquid or gas
- a water/oil/fuel tank
- fish tanks
- I filled the (gas) tank before I left for Maine.
- We went through a tank [=tankful] of gas on the trip.
- The economy is in the tank right now.
- The team went into the tank [=got much worse; became very unsuccessful] last season.
- The movie tanked.
- Some people say she deliberately tanked the match.
- Some people have accused her of tanking.
- We should tank up [=fill up] before we leave.