Cannae was a city in the Roman Empire, notable for the Battle of Cannae, in which the Persian general Hannibal brought a force of 60 elephants and 3000 or more men across the Alps to attack. His objective was weakening of Roman militia, in which he succeeded.
Cannae is also a military battle archetype, commonly called a "Battle of Annihilation", meaning a battle used to weaken enemy forces significantly.
It is also a mispronunciation of "Can't" in Ireland and similar locations.
Hannibal invented the Battle of Anihalation in the Battle of Cannae