Graecis
Graecis is a Latin form of Graecus, meaning “Greek; a Greek”. It is the ablative plural feminine adjective or ablative plural masculine adjective.
Found 294 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 1.29.1: In castris Helvetiorum tabulae repertae sunt litteris Graecis confectae et ad Caesarem relatae, quibus in tabulis nominatim ratio confecta erat, qui numerus domo exisset eorum qui arma ferre possent, et item separatim, quot pueri, senes mulieresque.
Juvenal, Saturae 5.14.89: culmina villarum graecis longeque petitis
All forms of Graecus (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.