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Noun: flightless bird  flIt-lus burd
  1. Flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds
    - ratite, ratite bird

Derived forms: flightless birds

Type of: bird, birdie [informal]

Antonym: carinate

Encyclopedia: Flightless bird