An ESP in scientific terms, it is basically a Sense beyond the 5 (Touch, Taste, Smell, Sight, Sound). Such include abilities such as Telekinesis, Telepathy, and Remote Viewing. There are many beyond these three however. It is one of the greatest gifts one person could be given, and I wish I had it. It makes you a Psychic.
Wish I had a 6th Sense. Who knows what I'd be able to do!