œil-de-bœuf /œ-ē-də-bœfˈ/

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

• coapts
• coarb
• coarbs
• coarctate
• coarctated
• coarctates
• coarctating
• coarctation
• coarctations
• coarse
• coarse fish
• coarse fishes
• coarse fishing
• coarse-grained
• coarsely
• coarse metal
• coarsen
• coarsened
• coarseness
• coarsenesses
• coarsening
• coarsens
• stingfish
• stingier
• stingiest