Santa Maria de Belem san·ta·ma·riadebelem uncommon noun 1. port city in northern Brazil in the Amazon delta; main port and commercial center for the Amazon River basin SynonymsBelemParaFeliz LusitaniaSanta Maria de BelemSt. Mary of Bethlehem Related words Broader terms cityport Parts Brazil WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.