1. 
[syn: turmeric, Curcuma longa, Curcuma domestica]
2.  ground dried rhizome of the turmeric plant used as seasoning; 
The Collaborative International Dictionary of English v.0.48:
Turmeric \Tur"mer*ic\, a. (Chem.)
   Of or pertaining to turmeric; resembling, or obtained from,
   turmeric; specif., designating an acid obtained by the
   oxidation of turmerol.
   [1913 Webster]
   Turmeric paper (Chem.), paper impregnated with turmeric and
      used as a test for alkaline substances, by which it is
      changed from yellow to brown.
   Turmeric root. (Bot.)
   (a) Bloodroot.
   (b) Orangeroot.
       [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Turmeric \Tur"mer*ic\, n. [F. terre-m['e]rite, NL. terramerita,
   turmerica; apparently meaning, excellent earth, but perhaps a
   corruption of Ar. kurkum. Cf. Curcuma.]
   1. (Bot.) An East Indian plant of the genus Curcuma, of the
      Ginger family.
      [1913 Webster]
   2. The root or rootstock of the Curcuma longa. It is
      externally grayish, but internally of a deep, lively
      yellow or saffron color, and has a slight aromatic smell,
      and a bitterish, slightly acrid taste. It is used for a
      dye, a medicine, a condiment, and a chemical test.
      [1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Bloodroot \Blood"root`\, n. (Bot.)
   A plant (Sanguinaria Canadensis), with a red root and red
   sap, and bearing a pretty, white flower in early spring; --
   called also puccoon, redroot, bloodwort, tetterwort,
   turmeric, and Indian paint. It has acrid emetic
   properties, and the rootstock is used as a stimulant
   expectorant. See Sanguinaria.
   [1913 Webster]
   Note: In England the name is given to the tormentil, once
         used as a remedy for dysentery.
         [1913 Webster]
WordNet (r) 3.0 (2006):
turmeric
    n 1: widely cultivated tropical plant of India having yellow
         flowers and a large aromatic deep yellow rhizome; source of
         a condiment and a yellow dye [syn: turmeric, Curcuma
         longa, Curcuma domestica]
    2: ground dried rhizome of the turmeric plant used as seasoning