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Noun: foursome  for-sum
  1. Four people considered as a unit
    "the foursome teed off before 9 a.m.";
    - quartet, quartette
  2. The cardinal number that is the sum of three and one
    - four, 4, IV, tetrad, quatern, quaternion, quaternary, quaternity, quartet, quadruplet, Little Joe

Derived forms: foursomes

Type of: assemblage, digit, figure, gathering

Encyclopedia: Foursome