legend

A story of unknown origin describing plausible but extraordinary past events.

A plausible story set in the historical past, but whose historicity is uncertain.

A story in which a kernel of truth is embellished to an unlikely degree.

A fabricated backstory for a spy, with associated documents and records.

A leading protagonist in a historical legend.

A person with legend-like qualities, such as extraordinary accomplishment.

A key to the symbols and color codes on a map, chart, etc.

(numismatics, heraldry) An inscription, motto, or title, especially one surrounding the field in a medal or coin, or placed upon a heraldic shield or beneath an engraving or illustration.

A musical composition set to a poetical story.

(naval) The design and specification of a vessel.