THIRD RAIL Definition & Meaning

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third rail

[thurd reyl]

Phonetic (Standard)IPA

noun

Railroads.��
1. a rail laid parallel and adjacent to the running rails of an electrified railroad to provide electric current to the motors of a car or locomotive through contact shoes.
2. an additional running rail laid on the same ties as the two regular rails of a railroad track to provide a multigauge capability.
a controversial topic or issue in the public sphere that people, especially politicians, try to avoid discussing (often used attributively): Doping is the third rail of the Olympics.
a third-rail subject;
Doping is the third rail of the Olympics.
Social Security is the third rail of American politics.

third rail

noun

an extra rail from which an electric train picks up current by means of a sliding collector to feed power to its motors
politics
1. a cause or topic that is considered extremely dangerous for a person to support or comment on
2. ( as modifier )
  a third-rail issue

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51�Թ� History and Origins

Origin of third rail¹

An Americanism dating back to 1865–70

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Idioms and Phrases

Something that is dangerous to tamper with, as in Anything concerning veterans is a political third rail. This term alludes to the rail that supplies the high voltage powering an electric train, so called since 1918. On the other hand, grab hold of the third rail means “become energized.” Both shifts from the original meaning date from the late 1900s.

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Example Sentences

Examples have not been reviewed.

They are not called the third rail for nothing.

From

"Only one in six passengers use it - so for £200m that money could be working harder," another source tells me, "but the politics wrapped around it mean if you touch, it is a third rail".

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But it turns out that he might just be touching the real third rail.

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Bernthal’s mom, a social worker, sent him to his first acting class essentially as punishment, an initial toe dip that he said felt electric, like “touching the third rail.”

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Republicans are dancing around the third rail of American politics and at least one GOP lawmaker has had enough.

From

third quartile third-rate

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