threesome [ 'θri:səm ]

• n.
  • the cardinal number that is the sum of one and one and one

    同义词： three 3 III trio tierce leash troika triad trine trinity ternary ternion triplet tercet terzetto trey deuce-ace

  • three people considered as a unit

    同义词： trio triad trinity

以上来源于: WordNet