A billyclub, also commonly known as a baton or nightstick, is a type of truncheon that is primarily used by law enforcement officials to subdue unruly suspects. However, there are many other words that can be used to describe this type of weapon. Some of the most common synonyms for billyclub include bat, club, bludgeon, cudgel, and stick. Other similar words that are commonly associated with this type of weapon include mace, hammer, truncheon, and blackjack. Regardless of what you call it, a billyclub is a powerful weapon that should only be used by properly trained law enforcement officials.