equitis
equitis is a Latin form of eques, meaning “horseman, rider; (pl.) cavalry; a knight, member of the equestrian order”. It is the genitive singular masculine noun.
Found 45 times in the Latin texts on Socratos.
Where it is used
Cicero, Pro L. Murena 16: … s tuae. qua re ego te semper in nostrum numerum adgregare soleo, quod virtute industriaque perfecisti ut, cum equitis Romani esses filius, summa tamen amplitudine dignus putarere. nec mihi umquam minus in Q.Quinto Pompeio, novo …
All forms of eques (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.