Noun | 1. | ![]() |
2. | ![]() flightless bird, ratite, ratite bird - flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds genus Pterocnemia, Pterocnemia - a genus of birds of the family Rheidae | |
3. | ![]() flightless bird, ratite, ratite bird - flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds genus Rhea - type genus of the Rheidae; large tall flightless South American birds similar to but smaller than ostriches |