Hardened Plaque on Teeth
This page is the CodyCross answer for the clue below from Brazilian Tour, Group 772, Puzzle 3 (Parrot Peak).
Question is: Hardened Plaque on Teeth
and the answer is: TARTAR
Word Meaning:
TARTAR — A red compound deposited during wine making, mostly potassium hydrogen tartrate; wine stone — a source of cream of tartar.
Definitions from Wiktionary.