Definition of "idyll"

Any poem or short written piece composed in the style of Theocritus's short pastoral poems, the Idylls.  examples

An episode or series of events or circumstances of pastoral or rural simplicity, fit for an idyll; a carefree or lighthearted experience.  examples

(music) A composition, usually instrumental, of a pastoral or sentimental character, e.g. Siegfried Idyll by Richard Wagner.  examples