Achilles heel

Achilles heel

noun
a portion, spot, area, or the like, that is especially or solely vulnerable: His Achilles heel is his quick temper.
Also, Achilles' heel.


Origin:
1800–10

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
Achilles heel
 
n
a small but fatal weakness

Collins English Dictionary - Complete & Unabridged 10th Edition
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