(chiefly Britain) An alumnus, especially of a public school. / A former member of a group. / (UK) An old man. / (UK, dated) A familiar term of address for a man of any age.

plural of old boy

(idiomatic) A presumed unacknowledged system of association between childhood friends (especially those at school or university together), used for mutual assistance or favouritism.

(idiomatic) A male friend or chum, especially a schoolmate; a man with an established network of friends who assist one another in social and business situations; a decent, dependable fellow.

Alternative form of old boy network

plural of old boy network

plural of old-boy network

Alternative form of old boy network

plural of good old boy network

plural of good old boy