cobra Definition

any of several venomous Asian and African elapid snakes (genera Naja and Ophiophagus) that when excited expand the skin of the neck into a hood by movement of the anterior ribs; also : any of several related African snakes

a large cobra (Ophiophagus hannah synonym Naja hannah) of southeastern Asia and the Philippines that may attain a length of 18 feet (5.5 meters)

any of several cobras (such as Naja nigricollis and Hemachatus haemachatus of Africa) that in defense typically eject their venom toward the victim without striking