Definition of "fascinum"

Here are some brides of ten compelled to seat themselves on the fascinum, the virile ivory in the temples of classical scholarship.

1955, Vladimir Nabokov, Lolita

Today people use a four-leaf clover, the pompom from a European sailor’s hat, the fascinum (winged phallus, some of which were found in the ruins of Pompeii and seemed to have done little good there), and so on.

1988, Leonard R. N. Ashley, The Amazing World of Superstition, Prophecy, Luck, Magic & Witchcraft, Random House Value Publishing, page 107