(also old boy network)Word forms: plural old-boy networks
N-COUNT 老同学间的互相关照;校友关系网 When people talk about the old-boy network, they are referring to a situation in which people who went to the same public school or university use their positions of influence to help each other. 老同学间的互相关照;校友关系网 [British, disapproval]
The majority obtained their positions through the old boy network.