Meaning offill upin English

Verb

1. to make something completely full
   The water tank will fill up automatically.
2. to refill a vehicle's tank with fuel
   You need to fill up your car's gas tank before embarking on the road trip.
3. to complete a document (with information)
   Please fill up the application form with your personal details.
4. to satisfy one's hunger; stop being hungry
   Eating a large meal will fill up your stomach and give you energy.
5. to become completely full (of a container, etc.)
   The new policy will fill up the vacant positions in the company.