Definition of "cactus"

cactus

/ˈkæktəs/

noun
plural cacti or cactuses or cactusses or cactus
1. (botany) Any member of the family Cactaceae, a family of flowering New World succulent plants suited to a hot, semi-desert climate.
2. Any succulent plant with a thick fleshy stem bearing spines but no leaves, such as euphorbs.
adjective
not comparable
1. (Australia, New Zealand, slang, dated) Non-functional, broken, exhausted, dead.
  Quotations
  I wouldn't mind throwing it away if it's cactus except for the VCR part which works fine, so then I'd be up for a new VCR as well.
  2001 July 8, Dave, “TV Problems”, in aus.electronics‎ (Usenet)
  I would say it's cactus. Water conducts & destroys components & PCBs very easily. Hence the water-resistant phones.
  2004 August 25, AC, “water damage ???”, in alt.cellular.nokia‎ (Usenet)
  ‘It′s cactus,’ Rod, the helicopter pilot, said at the sound of the piston ring shattering.
  2009, Will Chaffey, Swimming with Crocodiles: An Australian Adventure‎, page 108
  Michael Armstrong: "Michael Armstrong, I represent Sonia Stevens."Sue "Boomer" Jenkins: "Oh, haven't you heard? She cactus."Armstrong "Yes, I realize that, and that's a terrible business.
  2018, “Fractured”, in Wentworth