Definition of cassowary
noun (plural cassowaries)
- a very large flightless bird related to the emu, with a bare head and neck, a tall horny crest, and one or two colored wattles. It is native mainly to the forests of New Guinea.
- Family Casuariidae and genus Casuarius: three species, in particular the double-wattled (or Australian) cassowary (C. casuarius)
early 17th century: from Malay kesuari