Achilles heel的意思

"Achilles heel" is an English idiom that comes from Greek mythology. In the story of the Trojan War, Achilles was a Greek warrior who was almost invincible. He was said to have been dipped into the River Styx by his mother, making him invulnerable to harm. However, she held him by the heel, so that part of him was not protected. Achilles was later killed by an arrow that struck him in the heel, which became his vulnerable spot or "Achilles heel."

Today, the term "Achilles heel" is used to describe a person's weak point, a vulnerability or a fatal flaw that can lead to their downfall. It can also refer to a weakness or a point of vulnerability in an organization, a system, or any other entity.