a weak link

a weak link (in the chain)

the weakest part of a system or the weakest member of a group of people that could cause the whole system or group to fail It's a strong team, though the goalkeeper may be a weak link because he's rather inexperienced. The weak link in the chain is the computer software that controls the system.

Common Names:

Name	Pronounced	Usage
Karla	KAHR-lah (German)	German, Swedish, Norwegian, Danish, Croatian
Melvyn	MEL-vin	English
Tabita	-	Biblical Latin
Abishag	AB-i-shag (English)	Biblical
Junaid	-	Arabic
Chestibor	-	Medieval Slavic