safety chain
noun
1
a
: a normally slack chain for preventing excessive movement between a railroad car truck and a car body in sluing
b
: a heavy chain by which railroad cars may be connected to protect against accidental uncoupling
2
: a small chain used as a secondary safeguard on a piece of jewelry (as a watch or bracelet)
3
: a chain formed of sheet metal links with an elongated hole through each broad end and constructed by a repeated series of doubling a link upon itself, slipping the next link through the two now superimposed holes of the first, and doubling it
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“Safety chain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/safety%20chain. Accessed 22 Nov. 2024.
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