hex

Before I Say Good-Byeを読んでいます。Macと秘書のLizとの会話です。
IN ONE GESTURE, Liz Hanley tapped on and opened the door of Cornelius MacDermott’s private office. “I’m on my way,” she told him.
“I was just going to remind you to get started. It’s 2:30.”
“And I’m due at three.”
“Now, Liz, I feel a little guilty asking you to do this, but it is important.”
“Mac, if that woman puts a hex on me, it’s your fault.”
"hex" はコンピュータの機械語やアセンブリー言語でよく使用する16進法かあるいは "hexagon"（六角形）を連想しますが、上の引用文の "hex" の意味は何でしょう？　辞書を見ます。
・Oxford English Dictionary: Cast a spell on; bewitch.: he hexed her with his fingers ・Collins Dictionary: If you say that there is a hex on someone or something, you mean that there seems to be a supernatural power causing unpleasant things to happen to them.: It's almost as if there is a hex on my family.
意味は分かりましたが語源が気になります。次の辞書に説明がありました。
・Wiktionary: First attested about 1830, from Pennsylvania German hexe (“to practice witchcraft”), from German hexen (compare Hexe (“witch”)). The noun appeared later, in the 1850s