According to ancient Greek legend, when Achilles was a baby, his mother dipped his body in the River Styx to make him invincible. She held him by the heel, so it remained dry.
During the Trojan War, Achilles was killed when he was shot in the heel with an arrow.
Because of this, an “Achilles heel” has come to mean a vulnerable spot in something that is otherwise very strong.
Therefore, a heel in a dream can represent vulnerability. If you dream about a heel, you may be unaware of a potential danger. Although you may be feeling strong, you could be taking on an unnecessary risk.
A heel can also represent something that is mundane or practical.