safety chain

noun

1. a chain on the fastening of a bracelet, watch, etc, to ensure that it cannot open enough to fall off accidentally Also calledguard

Example Sentences

In time, though, words and images begin syncing up — we hear “the security chain was locked” over a shot of a safety chain lock — creating a seamless correspondence between what we hear and see.

From New York Times

Two anchors failed, three others dragged and another was torn apart, with parts broken to pieces, including a snapped safety chain.

From Seattle Times

For the John S. McCain to collide with the Alnic MC, a handful of separate functions in the safety chain must have failed, the officer said.

From New York Times

As the safety chain rattled and the door opened, the man standing before us seemed anything but the evil predator leading a Rochdale grooming gang he was about to be exposed as.

From BBC

A trailer safety chain sparked after it came into contact with a rock.

From Washington Times