What is "pocus"

Usage examples of "pocus".

I think of Hocus Pocus, when Eugene Debs Hartke is fired from his job as a teacher because the right wing gets after him.

The magician covered her figure with a light cloth so that only the form showed, and then, without the usual hocus pocus gestures commonly employed in the levitation trick, she began to rise until she was suspended three feet above the bench.