redbird cactus

noun
red·​bird cac·​tus | \ ˈred-ˌbərd-ˈkak-təs How to pronounce redbird cactus (audio) \

Medical Definition of redbird cactus

: a tropical American spurge of the genus Pedilanthus (P. tithymaloides) that causes severe poisoning if any part of the plant is eaten