Wordnet 3.0
NOUN (1)
1.
an exclusive informal network linking members of a social class or profession or organization in order to provide connections and information and favors (especially in business or politics);
- Example: "professional women have developed an old boy network of their own"
WordNet (r) 3.0 (2006):
old boy network
n 1: an exclusive informal network linking members of a social
class or profession or organization in order to provide
connections and information and favors (especially in
business or politics); "professional women have developed
an old boy network of their own"