1. Not permitting the passage of water
   - waterproof, waterproofed

See also: tight

• railroad worm
• railroad yard
• railroader
• railroading
• rails
• railway
• railway bed
• railway car
• railway carriage
• railway junction
• railway line
• railway locomotive
• railway siding
• railway station
• railway system
• railway track
• railway train
• railway tunnel
• railway yard
• railwayman
• railyard
• raiment
• raimentless
• rain
• rain barrel