odeon /ōˈdi-ən, -dyən or -dēˈ/, also odeum /-əm/

1. In ancient Greece and Rome, a theatre for musical contests, etc
2. A concert hall

• rail-motors
• railroad
• railroad car
• railroad cars
• railroaded
• railroader
• railroaders
• railroading
• railroads
• rails
• rail-splitter
• rail-splitters
• railway
• railway carriage
• railway carriages
• railway crossing
• railway crossings
• railwayman
• railwaymen
• railways
• railway-stitch
• railwoman
• raiment
• raiments
• rain