ottava rima

‖ [ It. See Octave, and Rhyme. ] (Pros.) A stanza of eight lines of heroic verse, with three rhymes, the first six lines rhyming alternately and the last two forming a couplet. It was used by Byron in “Don Juan, ” by Keats in “Isabella, ” by Shelley in “The Witch of Atlas, ” etc. [ Webster 1913 Suppl. ]