a chink in someone's armour

chink in (one's)/the armor

A minor but very detrimental flaw or weakness. Yeah, he's brilliant, but his violent temper has destroyed many business relationships—it's a real chink in his armor. The criminal's tendency to use his own cell phone to conduct business was the chink in the armor the police needed to put him in jail.
See also: armor, chink
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

a chink in someone's armour

If someone or something has a chink in their armour, they have a weakness that people can take advantage of, although they seem very strong and successful. Note: `Armour' is spelled `armor' in American English. With their superior knowledge, they might find the chinks in his armour. Labour leaders hope to use their annual conference to attack what they currently see as the most vulnerable chink in the government's armour. Note: A chink is a small hole or opening.
See also: armour, chink
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

a chink in someone's armour

a weak point in someone's character, arguments, or ideas which makes them vulnerable to attack or criticism.
See also: armour, chink
Farlex Partner Idioms Dictionary © Farlex 2017
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