| ratite | (n) flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds, Syn. ratite bird, flightless bird, Ant. carinate |
| Ratite | a. (Zool.) Of or pertaining to the Ratitae. -- |
| 走鳥類 | [そうちょうるい, souchourui] (n) ratites [Add to Longdo] |
| 平胸類 | [へいきょうるい, heikyourui] (n) (See 走鳥類) ratites [Add to Longdo] |