[syn: ridged, carinate, carinated, keeled]
The Collaborative International Dictionary of English v.0.48:
Carinate \Car"i*nate\, Carinated \Car"i*na`ted\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]
WordNet (r) 3.0 (2006):
carinate
    adj 1: having a ridge or shaped like a ridge or suggesting the
           keel of a ship; "a carinate sepal" [syn: ridged,
           carinate, carinated, keeled]
    n 1: birds having keeled breastbones for attachment of flight
         muscles [syn: carinate, carinate bird, flying bird]
         [ant: flightless bird, ratite, ratite bird]