c.1593, perhaps a corruption of It. deletto "delight," or (less likely) of Eng. diddle (q.v.). "Curse Eunuke dilldo, senceless counterfet" ["Choise of Valentines or the Merie Ballad of Nash his Dildo," T. Nashe, c.1593]
n. a stupid person, usually a male. (Rude and derogatory. The term refers to an artificial penis.) : Hank can be such a dildo sometimes.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
Cite This Source