 flightless_bird |
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| 1. | [ noun ] (zoology) flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds | |
| Synonyms: | ratite_bird ratite | |
| Related terms: | carinate bird elephant_bird kiwi emu rhea rhea moa cassowary ostrich | |
