Pronunciation: (kō'bru),[key] —n. 1. any of several highly venomous, Old World elapid snakes of the genera Naja and Ophiophagus, characterized by the ability to flatten the neck into a hoodlike form when disturbed.
2. any of several similar, related African snakes, as the ringhals.
3. leather made from the skin of a cobra.
4. (cap.) Mil.a single-engine, two-seat U.S. Army attack helicopter armed with missiles, rockets, and a 20mm cannon and in service since 1977.