tartar
noun/ˈtɑːtə(r)/
/ˈtɑːrtər/
- [uncountable] a hard substance that forms on teeth
- a build-up of tartar
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- [countable] (old-fashioned) a person in a position of authority who is strict and easily made angry
Word Originlate Middle English: via medieval Latin from medieval Greek tartaron, of unknown origin.
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tartar