Dictionary
u•pas
Pronunciation: (yOO'pus), [key]—
n.
1. the poisonous milky sap of a large tree,
Antiaris toxicaria, of the mulberry family, native to tropical Asia, Africa, and the Philippine Islands, used for arrow poison.
2. the tree itself.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.