In everyday language a measure of liquid roughly the equivalent of a third of a litre. In football it refers exclusively to Dom Perignon champagne and is generally agreed to mean three gallons. Example, "I had a pint and the next thing I knew the warder was shaking me awake and telling me my solicitor was waiting."
The pint is a unit of volume or capacity in Imperial units and U.S. customary units, equivalent in each system to 1/2 of a quart, and 1/8 of a gallon. It is used mainly in the U.S., the UK and the Republic of Ireland.