Webster’s Revised Unabridged Dictionary · 1913
Diddle
Did′dle, v. i. [Cf. Daddle.] To totter, as a child in walking. [Obs.] Quarles.
Did′dle, v. t. [Perh. from AS. dyderian to deceive, the letter r being changed to l.] To cheat or overreach. [Colloq.] Beaconsfield.