Possible Clues:

• Terza __ (verse form)
• Terza ___ (verse form)
• Terza ___ (Italian verse form)
• 'Green Mansions' girl
• Italian verse form
• Poesia feature
• "Green Mansions" heroine played by Audrey Hepburn
• Chink coming from edge and centre of glass
• Feature of un poema
• Statue at London's Hudson Memorial