bdellium

bdel·lium

bdellium

n.
  1. An unidentified substance mentioned in the Bible (Gen. ii. 12, and Num. xi. 7), variously taken to be a gum, a precious stone, or pearls, or perhaps a kind of amber found in Arabia.
  2. A gum resin of reddish brown color, brought from India, Persia, and Africa.