The Collaborative International Dictionary of English v.0.48:

Angelica \An*gel"i*ca\, n. [NL. See Angelic.] (Bot.)
   1. An aromatic umbelliferous plant (Archangelica
      officinalis or Angelica archangelica) the leaf stalks
      of which are sometimes candied and used in confectionery,
      and the roots and seeds as an aromatic tonic.
      [1913 Webster]

   2. The candied leaf stalks of angelica.
      [1913 Webster]

   Angelica tree, a thorny North American shrub (Aralia
      spinosa), called also Hercules' club.
      [1913 Webster]

WordNet (r) 3.0 (2006):

angelica
    n 1: any of various tall and stout herbs of the genus Angelica
         having pinnately compound leaves and small white or
         greenish flowers in compound umbels [syn: angelica,
         angelique]
    2: candied stalks of the angelica plant
    3: aromatic stems or leaves or roots of Angelica Archangelica