Idiom: Achilles' heel (meaning, examples, origin, pronunciation)

Achilles' heel is a weakness in a person or system which might cause them to fail.

Example 1: They have a team with great stars but a weak defense is their Achilles' heel.

Example 2: I'm a good student, but I know I won't score high enough on the scholarship test because math is my Achilles' heel.

Origin: The phrase has its origins in the legend of the Greek hero Achilles. According to the legend, Achilles was dipped into the river Styx by his mother Thetis to make him invulnerable. The only portion of his body not immersed into the water was his heels, by which his mother held him. As a result, the heels were the only vulnerable part of his body.

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