bonus genius noun2 •A small wooden doll that is covered with a cape and made to vanish as part of a magic trick.I'd pull out my cards and card-boxes, and the bonus genius or the wooden doll, and then I'd spread a nice clean cloth (which I always carried with me) on the table, and then I'd go to work. — 1967 •(no longer used) A benevolent spirit or angel, seen as influencing a person's decisions in a beneficial way.