fuse
/fjuːz/noun
Definitions
A cord that, when lit, conveys the fire to some explosive device.
Synonyms:fuze (US)The mechanism that ignites the charge in an explosive device.
Synonyms:fuzeA device to prevent the overloading of an electrical circuit, containing a component that melts and interrupts the current when too high a load is passed through it.
Indicating a tendency to lose one's temper.
Example: When talking about being laid off, he has a short fuse.