rat·ite /ˈræˌtaɪt/
(a.)平胸類的平胸類
Rat·ite a. Zool. Of or pertaining to the Ratitae. -- n. One of the Ratitae.
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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]