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rail

noun (TRAINS)
 
 
/reɪl/

Definition

B1 [U] the system of transport that uses trains: Environmentalists argue that more goods should be transported by rail.Railways and railway lines [C] one of the two metal bars fixed to the ground on which trains travel: A train left/went off the rails and crashed into the bank, killing several passengers.
(Definition of rail noun (TRAINS) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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