‖n. pl. [ NL., Fem. pl. fr. L. carinatus. See Carinate. ] A grand division of birds, including all existing flying birds; -- So called from the carina or keel on the breastbone. [ 1913 Webster ]
{ a. [ L. carinatus, fr. carina keel. ] Shaped like the keel or prow of a ship; having a carina or keel; as, a carinate calyx or leaf; a carinate sternum (of a bird). [ 1913 Webster ]