Dick only includes part of the information given on Wlkipedia for the term Gombeen it reads in full:

"A gombeen man is a pejorative Hiberno-English term used in Ireland for a shady, small-time "wheeler-dealer" businessman or politician who is always looking to make a quick profit, often at someone else's expense or through the acceptance of bribes. Its origin is the Irish word "gaimbín", meaning monetary interest.[1] The term referred originally to a money-lender and became associated with those shopkeepers and merchants who exploited the starving during the Irish Famine by selling much-needed food and goods on credit at ruinous interest rates"

It goes on to say:

"More generally, "gombeen" is now an adjective referring to all kinds of underhand or corrupt activities and to the mindset possessed by those engaged in such activities. In Irish politics, it is used to condemn an opponent for dishonesty or corruption, although its definition has become less precise with time and usage and it can also imply pettiness and close-mindedness. Alternative modern parlance for a gombeen man is someone "on the make". It is also used to describe certain Independent politicians who are seen to prioritize their constituents needs, no matter how trivial, over national interests"