Legend is a genre of folklore that consists of a narrative featuring human actions perceived or believed both by teller and listeners to have taken place within human history. Narratives in this genre may demonstrate human values, and which possesses certain qualities that give the tale verisimilitude. Legend, for its active and passive participants, includes no happenings that are outside the realm of "possibility," but may include miracles. Legends may be transformed over time, in order to keep them fresh, vital, and realistic. Many legends operate within the realm of uncertainty, never being entirely believed by the participants, but also never being resolutely doubted.
The Brothers Grimm defined legend as folktale historically grounded. A modern folklorist's professional definition of legend was proposed by Timothy R. Tangherlini in 1990:
Legend, typically, is a short (mono-) episodic, traditional, highly ecotypified historicized narrative performed in a conversational mode, reflecting on a psychological level a symbolic representation of folk belief and collective experiences and serving as a reaffirmation of commonly held values of the group to whose tradition it belongs.
