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1. A short stretch of railway track used to store rolling stock or enable trains on the same line to pass
   - railroad siding [N. Amer], turnout [N. Amer], sidetrack, railway siding [Brit, Cdn]
    
2. [N. Amer] Material applied to the outside of a building to make it weatherproof

1. Take sides for or against
   "I"m siding against the current candidate"

Derived forms: sidings

Type of: align, array, building material, railroad [N. Amer], railroad track [N. Amer], railway [Brit, Cdn], railway track [Brit, Cdn]

Encyclopedia: Side Side, Turkey