Pronunciation: kă-rī′nă, -rī′nē
1. In humans, a term applied or applicable to several anatomic structures forming a projecting central ridge.
2. That portion of the sternum in a bird, bat, or mole that serves as the origin of the pectoral muscles; it is not found in flightless birds or in most mammals.
The definition information for carina is provided by Stedman's. You can search our medical dictionary here.