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third rail
1 ENTRIES FOUND:
third rail
(noun)
third rail
noun
third rail
noun
Britannica Dictionary definition of THIRD RAIL
[
singular
]
1
:
a metal rail on a train track that carries electric current to the train's motor
2
:
a difficult issue that politicians try to avoid talking about
Social Security is the
third rail
of American politics.
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don't
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external
:
located, seen, or used on the outside or surface of something
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