Zara  (´; French, zaire ), a tragedy by Voltaire. Zara is the daughter of Lusignan d'Outremer, king of Jerusalem and brother of Nerestan. For twenty years Lusignan and his two children were captives at the court of the sultan Osman. The latter loves Zara, and was jealous of Nerestan, of whose relationship he was ignorant, and stabbed her to the heart. Nerestan being brought before the sultan, told him he had slain his sister. Osman then stabbed himself out of remorse.