- a British gallon used in liquid and dry measurement equivalent to 1.2 U.S. gallons, or 4.54 liters.
Origin of imperial gallon
First recorded in 1830–40
Also called British gallon.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a formal name for gallon (def. 1)