A large Australian bird, of two species (
Dromaius Novæ-Hollandiæ and
D. irroratus), related to the cassowary and the ostrich. The emu runs swiftly, but is unable to fly. [
1913 Webster]
" The name is sometimes erroneously applied, by the Brazilians, to the rhea, or South American ostrich."
[1913 Webster]