Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “rail”

rail

noun (TRAINS)    /reɪl/
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 attached 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)
Focus on the pronunciation of rail

Definitions of “rail” in other dictionaries

Word of the Day

well in (with)

to have a good relationship with someone in which they like you and from which you get an advantage

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More