( initial capital letter ) a mythical deity popularly believed in the Middle Ages to be worshiped by the Muslims and introduced into the morality play as a violent, overbearing personage in long robes.
adjective
3.
violent; turbulent; brawling; shrewish.
Origin: 1175–1225;Middle EnglishTermagaunt, earlier Tervagaunt, alteration of Old FrenchTervagan name of the imaginary deity
[C13: from earlier Tervagaunt, from Old French Tervagan, from Italian Trivigante; after an arrogant character in medieval mystery plays who was supposed to be a Muslim deity]
c.1500, "violent, overbearing person" (especially of women), from Teruagant, Teruagaunt (c.1200), name of a fictitious Muslim deity appearing in medieval morality plays, from O.Fr. Tervagant, a proper name in "Chanson de Roland" (c.1100), of uncertain origin.