Meaning of the word "third rail" in English
What does "third rail" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.
third rail
US /ˌθɜːrd ˈreɪl/
UK /ˌθɜːrd ˈreɪl/

Noun
1.
a political issue that is so controversial that any politician who dares to broach the topic will suffer a backlash from voters
Example:
•
Healthcare reform has become a third rail issue in American politics.
•
No politician wants to touch the third rail of social security.
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