Grai
Grai is a Latin form of Graii, meaning “the Grecians; a Greek”. It is the nominative plural masculine noun.
Found 27 times in the Latin texts on Socratos.
Where it is used
Cicero, Tusculanae Disputationes 3.39: … admiratio fiebat: Hícine est ille Télamon, modo quem glória ad caelum éxtulit, Quem áspectabant, cuíus ob os Grai óra obvertebánt sua?
Aulus Gellius, Noctes Atticae 13.8.3: Versus Afrani sunt in togata, cui Sellae nomen est: Usús me genuit, máter peperit Mémoria, Sophiám vocant me Grái, vos Sapiéntiam.
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.