Definition of tartars:
(n) :
A hard yellow deposit on the teeth, formed from dental plaque.
(n) :
A red compound deposited during wine making, mostly potassium hydrogen tartrate; wine stone — a source of cream of tartar.
(n) :
(dated) A fearsome or angrily violent person.
(n) :
A member of the various tribes and their descendants of Tartary, such as Turks, Mongols and Manchus.
(adj) :
Of or relating to the people or culture of Tartars.
(n) :
(figurative, dated) A person of a keen, irritable temper.