old boy
noun
plural
old boys
plural
old boys
Britannica Dictionary definition of OLD BOY
[count]
1
chiefly British
or
Old Boy
:
a person who went to a respected or well-known private school for boys
—
compare old girl
2
chiefly British, informal
:
an old man
old boy network
usually disapproving
also
old boys' network
:
an informal system in which wealthy men with the same social and educational background help each other