cog railway

noun
a railroad having locomotives with a cogged center driving wheel engaging with a cogged rail, to provide sufficient traction for climbing steeper grades than is possible with ordinary wheels.
Also called rack railway.


Origin:
1895–1900, Americanism

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Collins
World English Dictionary
cog railway or cogway (ˈkɒɡˌweɪ)
 
n
chiefly (US) other terms for rack railway
 
cogway or cogway
 
n

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Example sentences
Its privately-owned cog railway was the first mountain climbing railway in the world.
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