gallon — ONAD

gallon /ˈɡalən, ˈɡælən

▸ noun

1 US a unit of liquid capacity equal to 3.79 liters.

▪ (also imperial gallon) British a unit of liquid or dry capacity equal to four quarts or 4.55 liters.

2 (gallons of) informal a large volume of something:

gallons of fake blood.

– DERIVATIVES
gallonage /-nij/ noun

– ORIGIN Middle English : from Anglo-Norman French galon, from the base of medieval Latin galleta, galletum ‘pail, liquid measure’, perhaps of Celtic origin.