A Quatrain is a stanza of poetry consisting of four lines. Existing in various forms, the quatrain appears in poems from ancient civilizations including Ancient Greece and Ancient Rome continues into the 21st century where it's seen in works published in several languages. FormsThe heroic stanza or elegiac stanza (iambic pentameter, rhyming ABAB or AABB; from Thomas Gray's " Elegy Written in a Country Church-yard") » The Curfew tolls the knell of parting day, The lowing herd wind slowly o'er the… (More on Quatrain)