The definition of a ditty is a simple song.
(noun)An example of a ditty is a jingle for a commercial.
See ditty in Webster's New World College Dictionary
noun pl. ditties
Origin: ME dite < OFr dité < L dictatum, thing dictated, neut. pp. of dictare: see dictate
See ditty in American Heritage Dictionary 4
noun pl. dit·ties
Origin:
Origin: Middle English dite, a literary composition
Origin: , from Old French dite
Origin: , from Latin dictātum, thing dictated
Origin: , from
Origin: neuter past participle of dictāre, to dictate, frequentative of dīcere, to say; see deik- in Indo-European roots
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