tartar

Noun
  1. A salt used especially in baking powder (synset 115037836)
  2. A fiercely vigilant and unpleasant woman (synset 110049454)
  3. A member of the Mongolian people of central Asia who invaded Russia in the 13th century (synset 109664724)
  4. An incrustation that forms on the teeth and gums (synset 109478055)

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