noun

1. a short poem or prose work describing a simple, peaceful scene of rural or pastoral life
2. a scene or incident suitable for such a work
3. a narrative poem somewhat like a short epic Tennyson's “Idylls of the King”
4. Music a simple, pastoral composition

Etymology: L idyllium < Gr eidyllion, dim. of eidos, a form, figure, image: see -oid