Noun
A short poem; properly, a short pastoral poem; as, the idyls of Theocritus; also, any poem, especially a narrative or descriptive poem, written in an eleveted and highly finished style; also, by extension, any artless and easily flowing description, either in poetry or prose, of simple, rustic life, of pastoral scenes, and the like.
Source: Webster's dictionaryIn 1867 he wrote a rhymed piece, "Sielanka Młodości" ("Idyl of Youth"), which was rejected by Tygodnik Ilustrowany (The Illustrated Weekly). Source: Internet