Wiktionary
n. 1 An example. 2 A story demonstrating a moral point; a parable.
Wikipedia
An exemplum (Latin for "example", pl. exempla, exempli gratia = "for example", abbr.: e.g.) is a moral anecdote, brief or extended, real or fictitious, used to illustrate a point. The word is also used to express an action performed by another and used as an example or model.
Usage examples of "exemplum".
The second Lokman, also called the Sage, was a slave and Abyssinian negro, sold by the Israelites during the reign of David or Solomon, and who left a volume of proverbs and exempla, not fables or apologues, some of which still dwell in the public memory.
Thomas de Celano scribit, et malum exemplum per eos secularibus datum.
Gothicae hujus probitatis exemplum: Gensemundus ille toto orbe cantabilis, solum armis filius factus, tanta se Amalis devotione conjunxit ut haeredibus eorum curiosum exhibuerit famulatum, quamvis ipse peteretur ad regnum.
The result was the production of material about the Orient, methods for studying it, and exempla that even Orientals did not have.
The second Lokman, also called the Sage, was a slave and Abyssinian negro, sold by the Israelites during the reign of David or Solomon, and who left a volume of proverbs and exempla, not fables or apologues, some of which still dwell in the public memory.
Cum fame canis avida in Tyrio littore projecta conchylia impressis mandibulis contudisset, illa naturaliter humorem sanguineum diffluentia ora ejus mirabili colore tinxerunt: et ut est mos hominibus occasiones repentinas ad artes ducere, talia exempla meditantes fecerunt principibus decus nobile.
If the redoubtable Min can be taken to represent the law officer Warden Dios wished to be, then I may be regarded as an exemplum of the law officer he actually was.