EUPHORBIUM, the resinous concrete juice of several species of Euphorbia. This substance possesses very active qualities, being extremely acrid, violently purgative and emetic, and dangerously stimulant when it enters the nose in the form of dust. It is imported from Africa and several parts of India in serons (skin-bags), in small, hollow, forked pieces. See BOTANY, Nat. Ord. 195.