Wordnet 3.0
NOUN (2)
1. 
 usually used in combination: `liverwort'; 
 `milkwort'; 
 `whorlywort'; 
2. 
 unfermented or fermenting malt; 
The Collaborative International Dictionary of English v.0.48:
Wort \Wort\, n. [OE. worte, wurte, AS. wyrte; akin to OD. wort,
   G. w["u]rze, bierw["u]rze, Icel. virtr, Sw. v["o]rt. See
   Wort an herb.]
   An infusion of malt which is unfermented, or is in the act of
   fermentation; the sweet infusion of malt, which ferments and
   forms beer; hence, any similar liquid in a state of incipient
   fermentation.
   [1913 Webster]
   Note: Wort consists essentially of a dilute solution of
         sugar, which by fermentation produces alcohol and
         carbon dioxide.
         [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Wort \Wort\, n. [OE. wort, wurt, AS. wyrt herb, root; akin to
   OS. wurt, G. wurz, Icel. jurt, urt, Dan. urt, Sw. ["o]rt,
   Goth. wa['u]rts a root, L. radix, Gr. ? a root, ? a branch,
   young shoot, ? a branch, and E. root, n. Cf. Licorice,
   Orchard, Radish, Root, n., Whortleberry, Wort an
   infusion of malt.]
   [1913 Webster]
   1. (Bot.) A plant of any kind.
      [1913 Webster]
   Note: This word is now chiefly used in combination, as in
         colewort, figwort, St. John's-wort, woundwort, etc.
         [1913 Webster]
   2. pl. Cabbages.
      [1913 Webster]
WordNet (r) 3.0 (2006):
wort
    n 1: usually used in combination: `liverwort'; `milkwort';
         `whorlywort'
    2: unfermented or fermenting malt
Moby Thesaurus II by Grady Ward, 1.0:
54 Moby Thesaurus words for "wort":
   algae, autophyte, bean, bracken, brown algae, climber, conferva,
   confervoid, creeper, diatom, fern, fruits and vegetables, fucus,
   fungus, grapevine, green algae, gulfweed, herb, heterophyte, ivy,
   kelp, legume, lentil, liana, lichen, liverwort, mold, moss,
   mushroom, parasite, parasitic plant, pea, perthophyte,
   phytoplankton, planktonic algae, plant families, puffball, pulse,
   red algae, rockweed, rust, saprophyte, sargasso, sargassum,
   sea lentil, sea moss, sea wrack, seaweed, smut, succulent,
   toadstool, vetch, vine, wrack