Bdellium \Bdel"lium\, n. [L., fr. Gr. ?; 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.

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

Note: Indian bdellium or false myrrh is an exudation from Balsamodendron Roxb?rghii. Other kinds are known as African, Sicilian, etc.

Source: Webster's Revised Unabridged Dictionary (1913)