Third Rail Definition
noun
An extra rail used in some electric railways, instead of an overhead wire, for supplying power.
Webster's New World
A subject that tends to be avoided because of its offensive or controversial nature.
American Heritage
Figuratively, anything considered too problematic or controversial to freely alter or reevaluate without peril, as to one's political career.
Social Security is the third rail of American politics.
Webster's New World
Other Word Forms of Third Rail
Noun
Singular:
third rail
Plural:
third-rails
Third Rail Is Also Mentioned In
Find Similar Words
Find similar words to third rail using the buttons below.