Source : Webster's Revised Unabridged Dictionary (1913)

Camomile \Cam"o*mile\, Chamomile \Cham"o*mile\, n.[LL.
   camonilla, corrupted fr. Gr. ?, lit. earth apple, being so
   called from the smell of its flower. See {Humble}, and
   {Melon}.] (Bot.)
   A genus of herbs ({Anthemis}) of the Composite family. The
   common camomile, {A. nobilis}, is used as a popular remedy.
   Its flowers have a strong and fragrant and a bitter, aromatic
   taste. They are tonic, febrifugal, and in large doses emetic,
   and the volatile oil is carminative.

Chamomile \Cham"o*mile\, n. (Bot.)
   See {Camomile}.

Source : WordNet®

chamomile
     n : Eurasian plant apple-scented foliage and white-rayed flowers
         and feathery leaves used medicinally; in some
         classification systems placed in genus Anthemis [syn: {camomile},
          {Chamaemelum nobilis}, {Anthemis nobilis}]