Possible Clues:

• Stanza of some sonnets
• Italian sonnet's finale
• Italian sonnet's ending
• Point-to-point is left as it is? It's finally so poetic!
• End of some sonnets
• Italian sonnet's end
• Sonnet's finale
• Six-lined verse
• Miltonic poem ender
• Italian sonnet's 'resolution,' named for the number of lines it contains