upas

 
Pronunciation: /ˈjuːpəs/
(also upas tree)

noun

  • a tropical Asian tree, the milky sap of which has been used as arrow poison and for ritual purposes.
    • Antiaris toxicaria, family Moraceae
  • (in folklore) a Javanese tree alleged to poison its surroundings and said to be fatal to approach.

Origin:

late 18th century: from Malay (pohun) upas 'poison'