1. She uttered the magic word, and the spell was broken.

2. "Because" is a magic word when you want to get people to do something

3. Abracadabra, magic word or formula used mainly in folk medicine, as an incantation against fevers and inflammations.Several origins for the obscure word have been proposed, most of them regarding it as a derivative of an Aramaic demon-name, now unrecognizable.