chink in one's armor
A vulnerable area, as in Putting things off to the last minute is the chink in Pat's armor and is bound to get her in trouble one day. This term relies on chink in the sense of "a crack or gap," a meaning dating from about 1400 and used figuratively since the mid-1600s.
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| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| a fool or simpleton; ninny. |
