Popular beliefs: why do we call a weakness an "Achilles' heel"?

https://www.dictionaryscoop.com/article/Popular-beliefs-why-do-we-call-a-weakness-an-Achilles-heel Body terms often sound so natural that we forget how strange they really are. We have a funny bone, an Adam's apple, an Achilles' heel, wisdom teeth, and even love handles. Yet, when taken literally, these terms create some strange images. Bones can't tell jokes, teeth can't become wise, and there is no Adam stuck in our throat. But like the body, language has its functions, and sometimes it creates memorable expressions that outlast the medical terms themselves. Read on to uncover the stories behind 10 familiar expressions.