HyperDic: third_rail

English > 1 sense of the expression third rail:
NOUNartifactthird raila rail through which electric current is supplied to an electric locomotive
English > third rail: 1 sense > noun 1, artifact
MeaningA rail through which electric current is supplied to an electric locomotive.
Broadertrack, rail, rails, runwayA bar or pair of parallel bars of rolled steel making the railway along which railroad cars or other vehicles can roll

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