rouleau rou·leau UK/ɹuːˈləʊ/ US/ɹuˈloʊ/ uncommon noun 1. a roll of ribbon 2. a roll of coins wrapped in paper Related words Broader terms roll WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.