The Collaborative International Dictionary of English v.0.48:

Eugenin \Eu"ge*nin\, n. (Chem.)
   A colorless, crystalline substance extracted from oil of
   cloves; -- called also clove camphor.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Clove \Clove\, n. [OE. clow, fr. F. clou nail, clou de girofle a
   clove, lit. nail of clove, fr. L. clavus nail, perh. akin to
   clavis key, E. clavicle. The clove was so called from its
   resemblance to a nail. So in D. kruidnagel clove, lit.
   herb-nail or spice-nail. Cf. Cloy.]
   A very pungent aromatic spice, the unexpanded flower bud of
   the clove tree (Eugenia aromatica syn. Caryophullus
   aromatica), a native of the Molucca Isles.
   [1913 Webster]

   Clove camphor. (Chem.) See Eugenin.

   Clove gillyflower, Clove pink (Bot.), any fragrant
      self-colored carnation.
      [1913 Webster]