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]

WordNet (r) 3.0 (2006):

benzoic acid
    n 1: a white crystalline solid occurring in many resins