Wiktionary
n. (context fiction English) A booth that contains various tools to kill a user who wants to commit suicide, often automatically.
Wikipedia
A suicide booth is a fictional machine for committing suicide. Suicide booths appear in numerous fictional settings, including the American animated series Futurama and the manga Gunnm/Battle Angel Alita. Compulsory self-execution booths were also featured in an episode of the original Star Trek TV series entitled " A Taste of Armageddon".
The concept can be found as early as 1893. When a series of suicides were vigorously discussed in United Kingdom newspapers, critic William Archer suggested that in the golden age there would be penny-in-the-slot machines by which a man could kill himself.
Modern writer Martin Amis provoked a small controversy in January 2010 when he facetiously advocated "suicide booths" for the elderly, of whom he wrote: