from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Relating to or being any of a group of flightless birds having a flat breastbone without the keellike prominence characteristic of most flying birds.
- n. A ratite bird, such as the ostrich or emu.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A bird of the order of Struthioniformes, a diverse group of large running, flightless birds, mostly extinct, but including the cassowary, elephant bird, emu, kiwi, moa, ostrich, rhea and tinamou
from the GNU version of the Collaborative International Dictionary of English
- adj. Of or pertaining to the Ratitæ.
from The Century Dictionary and Cyclopedia
- Raft-breasted, as a bird; having a flat breast-bone or sternum with no keel; having no keel, as a breast-bone; ecarinate; of or pertaining to the.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds
From Latin ratītus, marked with the figure of a raft, from ratis, raft.(American Heritage® Dictionary of the English Language, Fourth Edition)