Silis

Along with the river Silarus, from a zero-grade form of Proto-Indo-European *seil-, extension of *sei- (“to be damp, drip”), related to Old Saxon sioloth (“lake”), Old Irish silid (“he flows”).

The river near Treviso

• (Classical) IPA^(key): /ˈsi.lis/, [ˈs̠ɪlʲɪs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈsi.lis/, [ˈsiːlis]

Silis m sg (genitive Silis); third declension

1. A river of Venetia that flows into the Adriatic Sea near Altinum, now the Sile

Third-declension noun (i-stem), singular only.

• “Silis”, in William Smith, editor (1854, 1857), A Dictionary of Greek and Roman Geography, volume 1 & 2, London: Walton and Maberly
• Pokorny, Julius, Indogermanisches Etymologisches Wörterbuch, Tübingen: A. Francke Verlag, 1959.