carin- +

(Latin: keel)

carina
1. The boat-shaped part of a pea flower, formed by the two fused lower petals.
2. A keel-shaped body part; such as, the ridge at the base of the windpipe where it divides to form the bronchi.
carinate
1. Birds having keeled breastbones for attachment of flight muscles.
2. Having or shaped like a carina or keel.
3. Having a ridge or shaped like a ridge or the keel of a ship.
carinated
1. Having or shaped like a carina or keel.
2. Having a ridge or shaped like a ridge or the keel of a ship.
multicarinate
Many-keeled (leaves or bracts, folded and ridged along the midrib).