tribum
tribum is a Latin form of tribus, meaning “third part of the people”. It is the accusative singular feminine noun.
Found 26 times in the Latin texts on Socratos.
Where it is used
Cicero, Pro L. Flacco 12: … utem in privatis minimarum rerum iudiciis testem diligenter expenditis; etiam si formam hominis, si nomen, si tribum nostis, mores tamen exquirendos putatis. qui autem dicit testimonium ex nostris hominibus, ut se ipse sustent …
All forms of tribus (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.