noun
also cog railroad
: a steep mountain railroad that has in the middle or on the side of its track a cograil that engages a cogwheel on the locomotive to ensure traction
noun
also cog railroad
: a steep mountain railroad that has in the middle or on the side of its track a cograil that engages a cogwheel on the locomotive to ensure traction
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012