mid-15c., commoun welthe, "a community, whole body of people in a state," from common (adj.) + wealth (n.). Specifically "state with a republican or democratic form of government" from 1610s. From 1550s as "any body of persons united by some common interest." Applied specifically to the government of England in the period 1649-1660, and later to self-governing former colonies under the British crown (1917). In the U.S., it forms a part of the official name of Pennsylvania, Massachusetts, Virginia, Kentucky, and Puerto Rico but has no special significance.
marsupial mammal of Australia, 1798, from aboriginal Australian womback, wombar.
capital of Australia, 1826, from Aborigine nganbirra "meeting place."
fabulous swamp-dwelling animal of Australia (supposedly inspired by fossil bones), 1848, from an Australian aborigine language.
"large, flightless bird of Australia and Papua," 1610s, via French or Dutch, from Malay (Austronesian) kasuari.