|Language:||Old North French|
|Origin:||Medieval Latin galeta 'liquid container, liquid measure'|
1 written abbreviation galTM
a unit for measuring liquids, equal to eight pints. In Britain this is 4.55 litres, and in the US it is 3.79 litres:
a 20 gallon fish tank
The car does about 50 miles per gallon.
a lot of a liquid:
We drank gallons of coffee.