Magic describes those unlikely events that seem to have a supernatural force behind them. When the elevator doors open just as you approach, it may seem like magic.
If you believe in witches and sorcerers, you probably already know that they can use magic to make impossible things happen. Magic is often used more broadly to describe things that just seem to involve some greater power. The waiter may appear as if by magic just when you’re craving dessert. Magic can also describe seemingly impossible tricks performed by an entertainer — a magician — such as making a person disappear or pulling a coin out of thin air.