gal·lon noun \ˈgal-ən\
: a United States unit of liquid capacity equal to four quarts or 231 cubic inches or 3.785 liters
: a British unit of liquid and dry capacity equal to four quarts or 277.42 cubic inches or 4.544 liters—called also imperial gallon
Seen & Heard
What made you want to look up gallon? Please tell us where you read or heard it (including the quote, if possible).