Achilles' heel

(Greek Mythology) only spot which is vulnerable (taken from the story in which Achilles is dipped in the river)

fatal weakness, vulnerable spot (from the Greek legend of Achilles)

Achilles Heel may refer to:Achilles' heel, a metaphor for a fatal weakness in spite of overall strengthAchilles Heel (band), a band from New York stateAchilles Heel (album), an album by Pedro the LionAchilles tendon
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This article deals with the phrase "Achilles’ heel". For the part of the body, see Achilles tendon; for other uses, see Achilles Heel. An Achilles’ heel is a fatal weakness in spite of overall strength, actually or potentially leading to downfall. While the mythological origin refers to a physical vulnerability, metaphorical references to other attributes or qualities that can lead to their downfall are common.
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Noun
1. a seemingly small but actual mortal weakness
(hypernym) weak part, weak spot, soft spot

a weakness, a vulnerable place Jewelry is my Achilles' heel. I buy too much jewelry.

idm. จุดบกพร่อง, จุดอ่อน