pylon

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py·lon / ˈpīˌlän; -lən/ • n. an upright structure that is used for support or for navigational guidance, in particular: ∎  (also electricity pylon) a tower used for carrying power lines high above the ground. ∎  a pillarlike structure on the wing of an aircraft used for carrying an engine, weapon, fuel tank, or other load. ∎  a tower or post marking a path for light aircraft, cars, or other vehicles, esp. in racing. ∎  a monumental gateway to an ancient Egyptian temple formed by two truncated pyramidal towers.

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