ratite
Concise Oxford English Dictionary © 2008 Oxford University Press:
ratite /ˈratʌɪt/ Ornithology
▶adjective denoting a bird having a flat breastbone without a keel and so unable to fly, such as an ostrich, emu, etc. Contrasted with carinate. ▶noun a ratite bird.
'ratite' also found in these Oxford entries:

