Did you know?

Click any word in a definition or example to find the entry for that word

train - definition and synonyms

What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.

Thesaurus diagram

The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning.

noun [countable]     train pronunciation in British English
Word Forms
  1. 1
    Sound effect a group of railway vehicles that are connected and pulled by an engine
    by train:

    We travelled across China by train.

    train to:

    I met her on a train to Glasgow.

    board/get on a train:

    When will we board the train?

    get off a train:

    We’ll be waiting for you when you get off the train.

  2. 2
    a series of events or thoughts
    a train of events/thoughts:

    Brett’s phone call set in motion a disturbing train of events.

    lose your train of thought (=forget what you are thinking):

    Just a minute, I’ve lost my train of thought.

  3. 3
    a line of people, animals, or vehicles that move slowly together

    a camel train

  4. 4
    a long part at the back of a dress, especially a wedding dress, that spreads over the ground


a rainbow produced when water droplets in the air reflect light from the moon rather than the sun

BuzzWord Article

Open Dictionary

platform capitalism

a way of doing business that involves recruiting large numbers of people who work for themselves using the company's platform, as used by companies such as Uber, Deliveroo and the like

add a word


A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog
Macmillan learn live love play