Did you know?

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

grand slam - 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] grand slam pronunciation in American English
Word Forms
singulargrand slam
pluralgrand slams
  • Facebook
  • Twitter
  1. 1
    a home run in baseball in which a player scores four runs (=points) because there is a player on each of the four bases
  2. 2

    Grand Slam

    a set of important competitions held in a sport during one year, especially in tennis, rugby or golf

    Melbourne’s Australian Open is the first Grand Slam tournament of the year.

    1. a.
      one of the important competitions held in a sport such as tennis, rugby or golf during one year

      Murray’s first Grand Slam was at the US Open.

    2. b.
      a situation in which a player or team wins all of a set of important competitions in a particular sport in the same year

      In 2010 New Zealand won their third Grand Slam in five years.

  3. 3
    a situation in the card game of bridge in which a pair of players wins all 13 of the tricks

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

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