Fifth (unit)

A "fifth" is a unit of measurement typically used to describe a specific volume of liquid, particularly in the context of alcohol. It refers to one-fifth of a U.S. gallon, which is equivalent to 25.6 fluid ounces (approximately 757 milliliters). In the context of spirits, a fifth is commonly seen as a standard bottle size for distilled beverages like whiskey, rum, vodka, and gin.