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.



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 /treɪn/
Word Forms
  • Facebook
  • Twitter
  1. 1
    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

sea lion

in an online conversation, repeatedly asking a person questions which suggest that you are interested in what they are talking about, but are actually intended to annoy them

BuzzWord Article

Word of the Day


to teach someone

Open Dictionary


an electric skateboard

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