third rail

noun

1
: a metal rail through which electric current is led to the motors of an electric vehicle (such as a subway car)
2
: a controversial issue usually avoided by politicians

Examples of third rail in a Sentence

Social Security is the third rail of American politics.
Recent Examples on the Web The new plant, Siemens's third rail production facility in the U.S., comes as the Biden Administration continues its push to get high-speed trains up and running in one of the few advanced nations that doesn’t have them. Alan Ohnsman, Forbes, 9 Sep. 2024 The remark caused many Republicans to panic, who have treated Harris’s race as a political third rail. Republicans immediately started hitting the panic button, with some down-ballot candidates taking Trump’s statements on more directly than others. Brady Knox, Washington Examiner - Political News and Conservative Analysis About Congress, the President, and the Federal Government, 1 Aug. 2024 But gambling had been the third rail of baseball ever since the Chicago White Sox took money to intentionally lose the World Series in 1919. Lee Cowan, CBS News, 19 Oct. 2014 The treatment of conscripts has been a political third rail in the past for Russia. Ivana Kottasová, CNN, 16 Aug. 2024 See all Example Sentences for third rail 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'third rail.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1867, in the meaning defined at sense 1

Time Traveler
The first known use of third rail was in 1867

Dictionary Entries Near third rail

Cite this Entry

“Third rail.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/third%20rail. Accessed 11 Oct. 2024.

More from Merriam-Webster on third rail

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!