looselink
nounUK /ˌluːs ˈlɪŋk/
US /ˌluːs ˈlɪŋk/
A loose link is a part of a chain that is not tight and can move around.
The bike chain came off because of a loose link.
RELATED WORDS
OTHER MEANINGS
2. A weak or unreliable connection in a system or group.
The team failed because there was a loose link in communication.
3. A person who is not dependable in a group.
He was the loose link in the plan and forgot his part.
4. A part of a chain that is not connected tightly.
The mechanic fixed the loose link in the gate chain.