Reading Martyn Rady’s ‘The Middle Kingdoms: A New History of Central Europe’, i came across this:
“These rowdy Hungarian diets, which were usually held on the Rákos Plain next to Pest, introduced a new word to the Polish lexicon—rokosz, meaning a violent insurrection of the nobility.”
(“diet” here of course in the sense of ‘parliament’)
This “rokosz” surely sounds to me like it was quite a ruckus!