The Collaborative International Dictionary of English v.0.48:

Benzoin \Ben*zoin"\ (b[e^]n*zoin"), n. [Cf. F. benjoin, Sp.
   benjui, Pg. beijoin; all fr. Ar. lub[=a]n-j[=a]w[imac]
   incense form Sumatra (named Java in Arabic), the first
   syllable being lost. Cf. Benjamin.]

   Note: [Called also benjamin.]
   1. A resinous substance, dry and brittle, obtained from the
      Styrax benzoin, a tree of Sumatra, Java, etc., having a
      fragrant odor, and slightly aromatic taste. It is used in
      the preparation of benzoic acid, in medicine, and as a
      perfume.
      [1913 Webster]

   2. A white crystalline substance, C14H12O2, obtained from
      benzoic aldehyde and some other sources.
      [1913 Webster]

   3. (Bot.) The spicebush (Lindera benzoin).
      [1913 Webster]

   Flowers of benzoin, benzoic acid. See under Benzoic.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Benzoic \Ben*zo"ic\ (b[e^]n*z[=o]"[i^]k), a. [Cf. F.
   benzo["i]que.]
   Pertaining to, or obtained from, benzoin.
   [1913 Webster]

   Benzoic acid, or flowers of benzoin, a peculiar vegetable
      acid, C6H5.CO2H, obtained from benzoin, and some other
      balsams, by sublimation or decoction. It is also found in
      the urine of infants and herbivorous animals. It
      crystallizes in the form of white, satiny flakes; its odor
      is aromatic; its taste is pungent, and somewhat acidulous.


   Benzoic aldehyde, oil of bitter almonds; the aldehyde,
      C6H5.CHO, intermediate in composition between benzoic or
      benzyl alcohol, and benzoic acid. It is a thin colorless
      liquid.
      [1913 Webster]