Six-gun is a term used to refer to a type of handgun with six rounds of ammunition. It has been popularized in Western movies and novels and is often associated with cowboys and outlaws. However, there are several synonyms for the word six-gun, such as revolver, six-shooter, wheel gun, or even simply a pistol. These terms all refer to the same type of firearm, but their usage can vary depending on the context. For instance, revolver might be more commonly used in law enforcement, while six-shooter and wheel gun might bring associations with the Wild West and cowboy culture.