œil-de-bœuf /œ-ē-də-bœfˈ/

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

• dumb-bells
• dumb blonde
• dumb blondes
• dumb-cane
• dumb-cluck
• dumb-clucks
• dumb down
• dumbed
• dumber
• dumbest
• dumbfound
• dumbfounded
• dumbfounder
• dumbfoundered
• dumbfoundering
• dumbfounders
• dumbfounding
• dumbfounds
• dumbing
• dumbing-down
• dumbledore
• dumbledores
• dumbly
• dumbness
• dumbnesses