Rubens ru·bens US/ˈrubʌnz/ uncommon noun 1. prolific Flemish baroque painter; knighted by the English king Charles I (1577-1640) SynonymsPeter Paul RubensSir Peter Paul Rubens Related words Broader terms old master WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.