third rail

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Definitions from WordNet

Noun third rail has 1 sense

third rail - a rail through which electric current is supplied to an electric locomotive
--₁ is a kind of track, rail, rails

Definitions from the Web

Third Rail

Definition:

The third rail, in electric rail systems, refers to the electrified rail that supplies power to trains. It is usually located alongside the running tracks and carries a high voltage electrical current.

Senses:

Noun:

The electrified rail that supplies power to trains in electric rail systems.

Examples:

Example 1:

When walking near train tracks, one must be careful to avoid touching the third rail as it carries dangerous voltage.

Example 2:

The train's power was interrupted when a bird sat on the third rail and caused a short circuit.

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