This is kind of a redundant question, one that gets asked at least twice a year on nearly every forum out there. . .
Magic is a performance art, an aspect of Theater; it's roots run deep in the course of human history with especial ties to the auspices of religion and the welding of psychological as well as scientific forms of Magick; prognostication, healing, transformation, etc.
As to what it means? Well, the essence of magic during our modern-times centers on the act of creating wonder & enchantment -- amusement by way of intrigue. But there are other dynamics such as how magic is able to transcend issues of language (communication) and aid those that are called to it, lending to them a vehicle by which they are able to "fit iin" and "feel normal" if not a bit superior to others. The superiority factor not being displayed as ego so much as confidence, but ego can be a factor; a self-destructive factor at that.
For me personally Magic has been a constant companion, my mistress as well as the bane of my existence at times. My passion is and has always been to create the sort of magic that evokes emotion and inspires others.