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
Violante	-	Late Roman
Martyna	mahr-TI-nah	Polish
Philip	FIL-ip (English), FEE-lip (Dutch)	English, Swedish, Norwegian, Danish, Dutch, Biblical
Lynna	LIN-ə	English (Rare)
Joachim	zho-a-KEEM (French), YO-ah-khim (German), yo-AH-khim (German), yaw-AH-kheem (Polish), JO-ə-kim (English)	French, German, Polish, Judeo-Christian Legend
Paramonos	-	Ancient Greek