group of death
noun [ S ] UK uk/ˌɡruːp əv ˈdeθ/ us/ˌɡruːp əv ˈdeθ/
（足球杯赛中的）有最多强队的小组，死亡之组
in the first stage of a football cup competition, a group containing several of the best teams in the competition, not all of whom can move onto the next stage
The group of death has three teams - Arsenal, Napoli and Dortmund - who could all potentially win the tournament. 死亡之组中的三只球队：阿森纳、那不勒斯和多特蒙德，都有希望夺冠。