Answer: curaris

AnswerCrossword Clue
CURARISPoison-yielding plants.
curarisplant yielding this substance
curarisblackish, resinlike substance derived from tropical plants of the genus Strychnos, esp. S. toxifera, and from the root of pareira, used by certain South American Indians for poisoning arrows and employed in physiological experiments, medicin
curarisCURARI, an arrow poison, also CURARE, URARE, URARI