Search Result for "flightless bird":
Wordnet 3.0

NOUN (1)

1. flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds;
[syn: ratite, ratite bird, flightless bird]



WordNet (r) 3.0 (2006):

flightless bird
    n 1: flightless birds having flat breastbones lacking a keel for
         attachment of flight muscles: ostriches; cassowaries; emus;
         moas; rheas; kiwis; elephant birds [syn: ratite, ratite
         bird, flightless bird] [ant: carinate, carinate
         bird, flying bird]