emu Meaning, Definition & Usage

  1. noun any of various systems of units for measuring electricity and magnetism
    electromagnetic unit.
  2. noun large Australian flightless bird similar to the ostrich but smaller
    Emu novaehollandiae; Dromaius novaehollandiae.

WordNet

E"mu noun
Etymology
Cf. Pg. ema ostrich, F. émou, émeu, emu.
Definitions
  1. (Zoöl.) 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. Written also emeu and emew. ✍ The name is sometimes erroneously applied, by the Brazilians, to the rhea, or South American ostrich.

Webster 1913