from The Century Dictionary.

  • noun On railroads, a rail so constructed that the wheels of cars roll upon its edge, the wheels being kept in place by flanges projecting from their inner periphery: so called in distinction from the flat rails first used.


Sorry, no etymologies found.


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  • Leicestershire, and there introduced the cast-iron edge-rail, with flanches cast upon the tire of the waggon-wheels to keep them on the track, instead of having the margin or flanch cast upon the rail itself; and this plan was shortly after adopted in other places.

    Lives of the Engineers The Locomotive. George and Robert Stephenson Samuel Smiles 1858


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