You searched for: “achilles heel
Achilles heel
A weakness that seems small but makes someone fatally vulnerable.

The term "Achilles heel" was first used by a Dutch anatomist, Verheyden, in 1693 when he dissected his own amputated leg.

—Dr. Ernest Klein, A Comprehensive Etymological Dictionaryi of the English Language, page 15.
This entry is located in the following unit: achillo-, achill-, Achilles (page 1)
A unit related to: “achilles heel
(a myth which has become a physical-medical application)
Word Entries at Get Words: “achilles heel
Achilles' Heel, the Myth
A myth which has become a physical-medical application unit.