plantocracy

noun

1. Government by plantation owners.

   “Too many, however, who might take an honourable stand, fear the petty spleen of the plantocracy; preferring the most disgusting adulation, to the blessing of him ready to perish.”

2. The group of plantation owners who have power in such a government.

   “Although remnants of the plantocracy retained positions of economic and political importance into the 1960s and represented the hardest core of Jamaican conservatism, its significance was historical rather than contemporary.”