Cocoon (ability)

Final Fantasy XIII
In Final Fantasy XIII, The city of Cocoon floats in the sky above the world of Pulse. It's a city protected by advanced technology against intruders from the planet below. The city is a futuristic utopia suspended above the a world many of its citizens fear below.

Final Fantasy XI
Cocoon is a Blue Mage skill that is learned from Crawlers. It increases the defense of the caster by 50 percent. This spell costs 1 Blue Magic Point to set.