[From the Italian diletto, q.d. a woman’s delight; or from our word dally, q.d. a thing to play withal.] Penis-succedaneus, called in Lombardy Passo Tempo. Bailey.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Dilberry maker * DiligentNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes