What type of object is referred to by "telum"?

The term "telum" in Latin specifically refers to a weapon or a projectile, such as a spear or javelin. This word encapsulates the concept of a tool designed for offense or defense in a combat scenario. In the context of ancient Roman society, "telum" could denote various types of weaponry used in warfare, making it an essential term for understanding military vocabulary and practices in Cicero's time.

The other options do not align with the definition of "telum." While a tool can have functional similarities to a weapon, it lacks the specific connotation of being designed for combat. A book or artwork also strays far from the concept of weaponry, as they are associated with knowledge and creativity rather than arms and defense. Thus, recognizing "telum" as a weapon or spear aptly captures its intended meaning within the context of Roman language and military practices.