[1] : The Collaborative International Dictionary of English v.0.48

tartar \tar"tar\, n. f. tartre cf. pr. tartari, sp., pg., 
   it. tartaro, ll. tartarum, lgr. ?; perhaps of arabic
   origin.
   1. chem. a reddish crust or sediment in wine casks,
      consisting essentially of crude cream of tartar, and used
      in marking pure cream of tartar, tartaric acid, potassium
      carbonate, black flux, etc., and, in dyeing, as a mordant
      for woolen goods; -- called also argol, wine stone,
      etc.
      1913 webster

   2. a correction which often incrusts the teeth, consisting of
      salivary mucus, animal matter, and phosphate of lime.
      1913 webster

   cream of tartar. chem. see under cream.

   tartar emetic med. chem., a double tartrate of potassium
      and basic antimony. it is a poisonous white crystalline
      substance having a sweetish metallic taste, and used in
      medicine as a sudorific and emetic.
      1913 webster
see also:
argol wine stone cream of tartar cream tartar emetic 

[2] : The Collaborative International Dictionary of English v.0.48

tartar \tar"tar\, n.
   1. per. t=at=ar, of tartar origin. a native or
      inhabitant of tartary in asia; a member of any one of
      numerous tribes, chiefly moslem, of turkish origin,
      inhabiting the russian europe; -- written also, more
      correctly but less usually, tatar.
      1913 webster

   2. a person of a keen, irritable temper.
      1913 webster

   to catch a tartar, to lay hold of, or encounter, a person
      who proves too strong for the assailant. colloq.
      1913 webster
see also:
tatar to catch a tartar 

[3] : The Collaborative International Dictionary of English v.0.48

tartar \tar"tar\, a.
   of or pertaining to tartary in asia, or the tartars.
   1913 webster

[4] : The Collaborative International Dictionary of English v.0.48

tartar \tar"tar\, n. cf. f. tartare.
   see tartarus. --shak.
   1913 webster
see also:
tartarus 

[5] : WordNet (r) 2.0

tartar
     n 1: a salt used especially in baking powder syn: cream of
          tartar, potassium hydrogen tartrate
     2: a fiercely vigilant and unpleasant woman syn: dragon
     3: a member of the mongolian people of central asia who invaded
        russia in the 13th century syn: tatar, mongol tatar
     4: an incrustation that forms on the teeth and gums syn: calculus,
         tophus
see also:
cream of tartar potassium hydrogen tartrate dragon tatar mongol tatar calculus 
tophus 

Tartar >> T Words
Tartar, definition of term: Tartar
tartar_pag1.html

Cream Of Tartar >> C Words
Cream Of Tartar, definition of term: Cream Of Tartar
cream+of+tartar_pag1.html