What is the meaning of Phylactery?

Either of the two small leather cases, containing biblical scrolls, worn by Jewish men at morning prayer; the tefilla.

A case in which (Christian) relics were preserved.

Any small object worn for its magical or supernatural power; an amulet or charm.

An enchanted object used (by such as a lich) to contain and protect the owner's soul.

A speech scroll, an illustrative device depicting speech, song or other sound as if written on a scroll.

Source: wiktionary.org