'Third rail' definitions:

Definition of 'third rail'

(from WordNet)
noun
A rail through which electric current is supplied to an electric locomotive

Definition of 'Third rail'

From: GCIDE
  • Third rail \Third rail\ (Electric Railways) (a) The third rail used in the third-rail system. (b) An electric railway using such a rail. [Colloq.] [Webster 1913 Suppl.]

Words containing 'Third rail'