Lewis & Short

Bospŏrus and Bosphŏrus (in MSS. sometimes Bosfŏrus), i, m.

    (
  1. I. fem., Sulp. Sev. Dial. 1, 26; Prop. 3, 11, 68; v. infra), = Βόσπορος and Βόσφορος (i. e. the heifer’s ford, on account of Io’s passage here as a heifer), the name of several straits, and particularly,
    1. A. Thracius, Gr. [?*BO/SPOROS *QRA/(KIOS ?], between Thrace and Asia Minor, now the Strait or Channel of Constantinople, Varr. R. R. 2, 1, 8; Mel. 1, 1, 5; 1, 2, 2 and 6; 1, 19, 5 and 12; 2, 2, 6; 2, 7, 3; Plin. 4, 12, 24, § 76 sq.; 5, 32, 43, § 149 sq.; Hor. C. 2, 13, 14; 2, 20, 14; 3, 4, 30; Val. Fl. 4, 345.
    2. B. Cimmerius, the Cimmerian Bosporus, leading from the Black Sea to the Azof, now the Strait of Kertsch or Jenikaleh, Mel. 1, 1, 5; 1, 19, 15; 1, 19, 17; 1, 19, 18; 2, 1, 2 and 3; Curt. 6, 2, 13; Plin. 4, 12, 24, § 76 sq.
      Voc. Bospore, fem., of the land adjoining the Bosporus, Prop. 3, 11 (4, 10), 68.
  2. II. Derivv.
    1. A. Bospŏrĭus (Bospŏrĕus, Sid. Carm. 2, 55), a, um, adj., = Βοσπόριος, of the Bosporus: mare, Ov. Tr. 2, 298 Jahn.
    2. B. Bospŏrĭcus, a, um, the same: mare, Gell. 17, 8, 16.
    3. C. Bospŏrānus (Bosph-, Bosf-), i, m., = Βοσπορανός, a dweller on or near the Bosporus Cimmerius, Cic. Imp. Pomp. 4, 9; Tac. A. 12, 15, 16.
      Hence, adj.: bellum, Tac. A. 12, 15, 63.