Definition of suicide door in US English:

suicide door

noun

  • 1A metaphorical exit door used by those who commit suicide.

  • 2A dangerously positioned door, specifically one which opens to a steep drop.

  • 3On a motor vehicle: a rear-hinged door for a passenger or driver, often perceived as dangerous due to the risk of it opening while the vehicle is in motion.

Origin

Mid 18th century. From suicide + door.

Pronunciation

suicide door

/ˌs(j)uːɪsʌɪd ˈdɔː/