ludorum
ludorum is a Latin form of ludus, meaning “game, play; school”. It is the genitive plural masculine noun.
Found 102 times in the Latin texts on Socratos.
Where it is used
Cicero, In C. Verrem 1.1.54: … iudicetur, cum haec frequentia totius Italiae Roma discesserit, quae convenit uno tempore undique comitiorum ludorum censendique causa. huius iudici et laudis fructum et offensionis periculum vestrum, laborem sollicitudinemque …
All forms of ludus (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.