In a Greek mythology Achilles, the greatest warrior of that time, had been dipped in the river Styx as a baby by his mother hoping to make him immortal. Achilles' heel was the only part that did not get dipped because his mother was holding him by his heel. Achilles was considered invincible. During the Trojan war, Achilles was shot in the heel by a poisonous arrow which killed him. So now we refer to a person's weak spot as their Achilles' heel.
By Sammy Martin
