SLING SPIRITS is a term used to describe a type of cocktail made with GIN, citrus juice, and simple syrup. It is a popular drink that has been around since the early 1900s and is often served in a tall glass with ice. The term SLING SPIRITS comes from the fact that the drink is traditionally served in a sling, which is a type of glassware with a long handle. The GIN in the crossword solution refers to the main ingredient in the cocktail, which is GIN.