Lewis & Short

2. Sīris, is, m., = Σίρις.

  1. I. The name of a branch of the Nile in Ethiopia, Plin. 5, 9, 10, § 54; Prisc. Perieg. 212.
  2. II. A river in Italy, Plin. 3, 11, 15, § 97.
  3. III. A name for Heraclea in Magna Graecia, Plin. 3, 11, 15, § 97.