Jesus nut

noun — 2 senses

Jesus nut

noun

Etymology Possibly from the Vietnam War. From the notion that, given its critical function, if the nut were to fail, the only thing left to do would be to "pray to Jesus".

1

Aeronautics, Aerospace, Aviation, Business, Engineering, Natural sciences, Physical sciences Slang The nut that holds the main rotor to the mast of some helicopters.

2

Figuratively, Slang A single point of failure with catastrophic consequences.

Related terms
Jesus clip, Jesus freak, Jesus pin

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.