—diamond /ˈdaɪə.mənd/
noun (CARDS)
diamonds [plural or U]F0 one of the four suits in playing cards, shown by one or more red symbols in the shape of a diamond:
» the six/jack of diamondsF0 [C] a playing card from the suit of diamonds:
» She played a diamond.noun (SHAPE)
B2 [C or U] a shape with four straight sides of equal length, forming two opposite angles that are wide and two that are narrow:
» Joe's socks had diamond patterns on them.See picture: diamond (geometric shape) 
Thesaurus+: ↑Geometrical shapes , ↑Spherical, circular and annular objects
F0 [C] the square part of a field on which baseball is played, surrounded by the four bases, or the whole field on which the game is played
See picture: baseball diamond Thesaurus+: ↑Surfaces on which sports take placeThesaurus+: ↑Baseball and rounders , ↑General terms used in ball sports
noun (STONE)
B2 [C or U] a transparent, extremely hard precious stone that is used in jewellery, and in industry for cutting hard things:
» The tiara was set with diamonds and rubies.» a diamond ring/necklace» He had worked in the diamond mines of South Africa.» diamond-tipped saw bladesSee picture: diamond (gem) Thesaurus+: ↑Precious and semi-precious stones , ↑Types of rockdiamonds [plural noun]
F0 jewellery made from diamonds:
» Shall I wear the diamonds or the pearls with this dress?Thesaurus+: ↑Jewellery• • •
Extra Examples:» The large central diamond is surrounded by eight smaller stones.» His father struck it rich in the diamond business.» He gave her a hugely expensive diamond ring.» It was a beautiful necklace with a diamond pendant.» A large diamond glinted on her finger.- professed
- profession
- professional
- professional advice
- professional foul
- professional help
- professionalism
- professionally
- professor
- professorial
- professorship
- proffer
- proficiency
- proficient
- profile
- profiling
- profit
- profitability
- profitable
- profitably
- profiteer
- profiteering
- profiterole
- profit from sth
- profit margin