Oxford Dictionary English

    grand slam

    noun
    noun
    BrE BrE//ˌɡrænd ˈslæm//
    ; NAmE NAmE//ˌɡrænd ˈslæm//
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  1. 1(also Grand Slam) (also slam) a very important sports event, contest, etc. a Grand Slam tournament/cup/title
  2. 2the winning of every part of a sports contest or all the main contests in a year for a particular sport Will France win the grand slam this year? (= in rugby)
  3. 3(also grand slam home run) (in baseball) a home run that is worth four points
  4. 4(in card games, especially bridge) the winning of all the tricks in a single game
    5.  Word Originearly 19th cent. (as a term in cards, especially bridge).
See grand slam in the Oxford Advanced American Dictionary
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