gombeen
Concise Oxford English Dictionary © 2008 Oxford University Press:
gombeen /gɒmˈbiːn/
▶noun [as modifier] Irish involved in the practice of usury: a gombeen man.
– origin C19: from Ir. gaimbín, perh. from the same Celtic source as med. L. cambire ‘to change’.
'gombeen' also found in these Oxford entries:

