n. [ L., fr. Gr. bde`llion; cf. Heb. b'dolakh bdellium (in sense 1). ] 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. [ 1913 Webster ]

2. A gum resin of reddish brown color, brought from India, Persia, and Africa. [ 1913 Webster ]

☞ Indian bdellium or false myrrh is an exudation from Balsamodendron Roxburghii. Other kinds are known as African bdellium, Sicilian bdellium, etc. [ 1913 Webster ]