œil-de-bœuf /œ-ē-də-bœfˈ/

1. A small round window
2. An octagonal vestibule at the court of Versailles, hence one elsewhere

• mudguards
• mud hen
• pye-dogs
• pyeing
• pyelitic
• pyelitis
• pyelitises
• pyelogram
• pyelograms
• pyelographies
• pyelography
• pyelonephritic
• pyelonephritis
• pyemia
• pyengadu
• pyengadus
• pyes
• pyet
• pyets
• pygal
• pygals
• pygarg
• pygargs
• pygidia
• pygidial