Definition of Fail-safe

a design feature that is devised so that if one part of a machine, plan, etc. fails, the whole thing doesn’t fail

Examples of Fail-safe in a sentence

The school put a two-part, fail-safe plan in place so that no students would get left behind in the case of a fire.  🔊

A fail-safe system was added to the driverless smart car to stop it from hitting a person in case of a malfunction.  🔊

Because the machine tends to break down a lot, a fail-safe piece was added to keep the rest of the system going.  🔊

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