ferrule /ferˈool, -əl/

1. A metal band, ring or cap on the tip of a stick, etc for reinforcing it
2. A threaded cylindrical fitting for joining two pipes or rods

• raillies
• railly
• railman
• railmen
• rail-motor
• 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