threesome/ˈθri:səm; `θrisəm/ n1 group of three people; trio 三人一组; 三个一组.2 game played by three people 三人玩的游戏或比赛. For the uses of three see the examples at five. 关於 three 的用法见 five 词条中的示例.
牛津英汉双解词典