tar‧tar /ˈtɑːtə $ ˈtɑːrtər/
noun[
Date: 1300-1400;
Language: Medieval Latin;
Origin: tartarum]
1. [uncountable] a hard substance that forms on your teeth
2. [countable] informal British English someone who has a violent temper:
She’s a real tartar. [TahlilGaran] Dictionary of Contemporary English ▲