LATIN DICTIONARYLexicon Latīnum
noun · masculinesecond declension

Tatarus

Tatarus m (genitive Tatarī, feminine Tatara)

Meaning

  1. New Latinmasculinea Tatar
    7125–1617. finito, et 7126–1618 veniente, exit Skender pasca contra Cosacos in terram Lehicham, minorem Russiam, et tunc advenit Bethlen Gabro et Radul Bogdaniae et Alexander Valachiae, verum non multi ceciderunt, et nonnullae palancae duntaxat incensae sunt. Postremo venit etiam perfidus Tatarus Cantamir, et populatus est minorem Russiam et 53 millia hominum praeter peccora abduxit.In the ending year 7125–1617 and beginning 7126–1618 Skender leaves the meadows against the Cossacks into Lechic earth, Little Russia, and then comes Bethlen Gabro and Radul of Bogdania and Alexander of Wallachia, but some fell, and some palankas at least have been set on fire. Later comes also the perfidious Tatar Cantamir, and populates Little Russia and abducts 53 thousand humans apart from livestock.1797, Franjo Ksaver Pejačević, “Chronica Serbica Despotae Georgii Branković”, in Arkiv za povjestnicu jugoslavensku, volume III, Zagreb, published 1854, page 30:

Declension

declension
formsingularplural
nominativeTatarus
Tatara, Tartara
Tatarī
Tatarae, Tartarae, Tartarī
genitiveTatarī
Tatarae, Tartarae, Tartarī
Tatarōrum
Tatarārum, Tartarārum, Tartarōrum
dativeTatarō
Tatarae, Tartarae, Tartarō
Tatarīs
Tartarīs
accusativeTatarum
Tataram, Tartaram, Tartarum
Tatarōs
Tatarās, Tartarās, Tartarōs
ablativeTatarō
Tatarā, Tartarā, Tartarō
Tatarīs
Tartarīs
vocativeTatare
Tatara, Tartara, Tartare
Tatarī
Tatarae, Tartarae, Tartarī

Phrases from Meissner's Latin Phrase-Book

inferi (Orcus and Tartarus only poetical)
the world below.

Origins

From the Turkic name of a Tatar tribe. More at Tatars.

Quick answers

What does Tatarus mean in Latin?
Tatarus, a noun, means “a Tatar”.
What is the genitive of Tatarus?
The genitive singular is Tatarī. Tatarus is masculine, second declension.