villanelle

/ˌvɪləˈnɛl/
noun
  1. A 19-line poem with a fixed form, using two repeating rhymes and two refrains.
    • Her favorite villanelle is 'Do not go gentle into that good night' by Dylan Thomas.
    • The poet wrote a beautiful villanelle about the changing seasons.
    • In English class, we learned how to write a villanelle with its strict pattern.