A lot vs. Alot: 9 Grammatical Pitfalls
1590s, perhaps a corruption of Italian deletto "delight," from Latin dilectio, noun of action from diligere "to esteem highly, to love" (see diligence). Or (less likely) of English diddle. "Curse Eunuke dilldo, senceless counterfet" ["Choise of Valentines or the Merie Ballad of Nash his Dildo," T. Nashe, c.1593]
dildo dil·do or dil·doe (dĭl'dō)
n. or dil·dos or dil·does
An object that is shaped like and is used as a substitute for an erect penis.