What is "appletini"

n. A cocktail of vodka and either apple juice, apple cider, or apple liqueur.

An Apple martini (Appletini for short) is a cocktail containing vodka and one or more of apple juice, apple cider, apple liqueur, or apple brandy.

This drink, properly called an Adam's Apple Martini, was created in 1997 at Lola's in West Hollywood, California.