old boy
noun uk/ˌəʊld ˈbɔɪ/ us/ˌoʊld ˈbɔɪ/
(OLD MAN)
[ C ] mainly UK informal老头儿
an old man
the old boy next door 隔壁的老头
[ as form of address ] mainly UK old-fashioned老兄，老伙计，老弟
a way that some men address male friends that they have known for many years
Come on, old boy, drink up. 来，老兄，喝光它。
(STUDENT)
[ C ] UK老同学，老校友
An old boy of a particular school is a man who went to school there as a child
an old-boy reunion 老校友聚会
Idiom
the old-boy networkidiom 校友关系网，老同学关系网;老同学间的相互关照
the way in which men who have been to the same expensive school or university help each other to find good jobs
The old-boy network still operates in some City banks. 在某些城市商业银行，老同学关系网仍然管用。