1. A resinous substance, dry and brittle, obtained from the styrax benzoin, a tree of Sumatra, java, etc, having a fragrant odour, and slightly aromatic taste. It is used in the preparation of benzoic acid, in medicine, and as a perfume.
2. A white crystalline substance, C14H12O2, obtained from benzoic aldehyde and some other sources.
3. (Science: botany) The spicebush (Lindera benzoin). Flowers of benzoin, benzoic acid. See benzoic.