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English definition of “old boy”

old boy

noun uk   us  

old boy noun (OLD MAN)

[C] mainly UK informal an old man: the old boy next door [as form of address] old-fashioned a way that some men address male friends that they have known for many years: Come on, old boy, drink up.

old boy noun (STUDENT)

[C] UK An old boy of a particular school is a man who went to school there as a child: an old-boy reunion
(Definition of old boy from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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