More on Jettator from Infoplease:

• Jettator - Jettator One with an evil eye, who always brings ill-luck. The opposite of the Mascotte (q.v.), who ...
• Evil Eye - Evil Eye It was anciently believed that the eyes of some persons darted noxious rays on objects ...
• Dictionary of Phrase and Fable: J - Definitions, origins, and illustrative excerpts for words, phases, and literary allusions starting with "J"