Jigger

A measure used to determine the amount of alcohol added to a mixed drink beverage, such as a "jigger" or a "shot" of rum. The term "jigger" and "shot" (shot glass) which are used interchangeably, can also apply to the small glass liquid bar utensil used for the actual measuring. A typical shot glass or jigger will hold 1.5 ounces, but there are a variety of different types and sizes of containers that range in measures from 1 to 8 ounces. Typically, a 3 to 8 ounce glass is referred to as a "shooter" glass. When a reference is made to a "pony" shot the amount of liquid being measured equals 1 ounce.