flumini
flumini is a Latin form of flumen, meaning “river”. It is the dative singular neuter noun.
Found 37 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 3.11.1: Itaque T. Labienum legatum in Treveros, qui proximi flumini Rheno sunt, cum equitatu mittit.
All forms of flumen (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.