adjective.
Of a bird, having a keeled breastbone allowing the attachment of flight muscles.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
birds having keeled breastbones for attachment of flight muscles
adjective.
having a ridge or shaped like a ridge or suggesting the keel of a ship
Word Usage
"In my mind, "carinate" means that there is a distinct thickening of the shell carbonate along the perifery, not just a sharp change in curvature angular."