diamond - definition and synonyms


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  1. 1
    [countable/uncountable] a very hard clear colourless stone used in expensive jewellery and for cutting hard objects

    a diamond ring/necklace/bracelet

  2. 2
    [countable] a shape with four straight equal sides that stands on one of its corners
  3. 3
    [countable] a playing card with a red diamond shape on it
    1. a.


      [plural] the suit (=group) of playing cards with red diamond shapes on them. The other suits are clubs, hearts, and spades

      the ten of diamonds

  4. 4
    [countable] the diamond-shaped area of a baseball field with the four bases at its corners