Domingo de Guzman do·min·go·deguzman uncommon noun 1. (Roman Catholic Church) Spanish priest who founded an order whose members became known as Dominicans or Black Friars (circa 1170-1221) SynonymsDominicSaint DominicSt. DominicDomingo de Guzman Related words Broader terms priestsaint WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.