noun
- a unit of liquid measure equal to 4 quarts or 3.785 liters in the US
Examples
- I bought a gallon of milk at the store.
- The car’s gas tank holds fifteen gallons.
- We need two gallons of paint for the living room.
- A gallon of water weighs about 8.3 pounds.
- The recipe calls for half a gallon of apple cider.
- Gas prices rose to over four dollars per gallon.