A small glass used to hold or measure a small quantity of liquor.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "shot glass" in a sentence
"Simple juice spritzer: Another refreshing low-calorie beverage is a simple real-juice spritzer, Blatner says., Add a shot glass full 1½ ounces of your favorite juice such as grapefruit, pineapple, orange or pomegranate juice to eight ounces of club soda or sparkling water, she says."
"Jigger: The 1½ oz shot glass takes the guesswork out of measuring liquor."
"I stopped on the way and bought a bottle of Cuervo Gold and a shot glass that said “The Bluegrass State” across the front, then I headed toward Frankfort, the state capital."