carinate

1. Having a ridge or shaped like a ridge or the keel of a ship: a carinate sepal.
   有脊或龙骨的，形状象脊或龙骨的：龙骨状萼片。

noun

1. birds having keeled breastbones for attachment of flight muscles

   Synonym:    carinate birdflying bird

adj

1. having a ridge or shaped like a ridge or suggesting the keel of a ship
   1. a carinate sepal

   Synonym:    ridgedcarinatedkeeled