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

As an airline pilot, I'm frequently asked what I think are the weakest links in the safety chain.

From The Daily Beast

Rings glitter upon his fingers; seals, keys, and safety chain, upon his person.

From Project Gutenberg

Didn't you say to me a fortnight or so ago that the little safety-chain had gone wrong?

From Project Gutenberg