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

Derived forms: ratite birds

Type of: bird

• recessive
• recessive allele
• recessive gene
• recharge
• rechargeable
• recharter
• recheck
• recherché
• rechewed food
• rechristen
• recidivate
• recidivism
• recidivist
• Recife
• recipe
• recipient
• recipient role
• reciprocal
• reciprocal cross
• reciprocal inhibition
• reciprocal ohm
• reciprocal pronoun
• reciprocal-inhibition therapy
• reciprocality
• reciprocally