say it: oh-PAH-suhm
opossum is a noun meaning "small furry Australian arboreal marsupials having long usually prehensile tails". It carries 2 recorded senses.
small furry Australian arboreal marsupials having long usually prehensile tails
nocturnal arboreal marsupial having a naked prehensile tail found from southern North America to northern South America
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for opossum come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.