pergolide UK /ˈpɜː.ɡəl.ʌɪd/US /ˈpɝ.ɡəˌlaɪd/ noun1 •An ergot derivative which is a dopamine agonist used chiefly in the treatment of Parkinson's disease.The drugs are pergolide, sold as Permax, and cabergoline, sold as Dostinex. — 2007