The Collaborative International Dictionary of English v.0.48:

Apiaceae \Apiaceae\ prop. n.
   A natural family of plants bearing flowers in umbels;
   examples are: parsley; carrot; anise; caraway;
   celery; dill.

   Syn: Umbelliferae, family Umbelliferae, family Apiaceae,
        carrot family
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Dill \Dill\ (d[i^]l), n. [AS dile; akin to D. dille, OHG. tilli,
   G. dill, dille, Sw. dill, Dan. dild.] (Bot.)
   An herb (Peucedanum graveolens), the seeds of which are
   moderately warming, pungent, and aromatic, and were formerly
   used as a soothing medicine for children; -- called also
   dillseed. --Dr. Prior.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dill \Dill\, v. t. [OE. dillen, fr. dul dull, a.]
   To still; to calm; to soothe, as one in pain. [Obs.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

dill
    n 1: aromatic Old World herb having aromatic threadlike foliage
         and seeds used as seasoning [syn: dill, Anethum
         graveolens]
    2: aromatic threadlike foliage of the dill plant used as
       seasoning [syn: dill, dill weed]