E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
To cheat in a small way, as I diddled him out of . Edgar Allan Poe has an article on the art of Diddling. Rhyming slang is very common. (See CHIVY.) Fiddle and diddle rhyme. Fiddle is slang for a sharper, and diddle is the act of a sharper. The suggestive rhyme was