Synonyms for Didelphis Marsupialis (same or very similar meaning)
WordNet sense 1 (omnivorous opossum of the eastern United States; noted for feigning death when in danger; esteemed as food in some areas; considered same species as the crab-eating opossum of South America):
common opossum, Didelphis virginianaFrom the ODE community, based on WordNetadd/edit