conundrum /kə-nunˈdrəm/

1. A riddle, esp one whose answer is a play on words
2. Any puzzling question

• corniced
• cornice-hook
• cornice-hooks
• cornice-pole
• cornice-poles
• cornice-rail
• cornice-rails
• cornice ring
• cornice rings
• cornices
• corniche
• corniches
• cornichon
• cornichons
• cornicing
• cornicle
• cornicles
• cornicula
• corniculate
• corniculum
• cornier
• corniest
• corniferous
• corniferous limestone
• cornific