support for the rule of the Bourbons, the European royal line that ruled in France, Spain, and Naples and Sicily at various times in the late 16th to early 20th centuries
2. US
extreme political and social conservatism
Bourbonism in American English
(ˈbʊrbənˌɪzəm)
US
noun
[alsob-]
advocacy or support of conservative government, like that of the Bourbons; extreme political and social reaction