Answer:
- What does it mean to have an "Achilles heel" ?
An Achilles heel is a weakness in spite of overall strength, which can lead to downfall. It is often used to describe a person's one major weakness, which can be exploited by their enemies.
- How did this saying develop from mythology?
The saying "Achilles heel" originated from Greek mythology. Achilles was a great warrior who was said to be invulnerable except for his heel. This was because his mother, Thetis, had dipped him in the River Styx when he was an infant, but she held him by his heel so that part of his body was not touched by the water.
Achilles' heel was eventually his downfall, as he was shot in the heel by an arrow during the Trojan War.