Lewis & Short

bĭmăris, e, adj. [bis-mare], lying between two seas.

  1. I. Lit., an epithet of Corinth (poet.; a favorite word of Ovid): bimarisve Corinthi Moenia, * Hor. C. 1, 7, 2; Ov. M. 5, 407: Ephyre, id. H. 12, 27: Isthmos, id. M. 7, 405; 6, 419 sq.
  2. II. Trop.: morbus, of one who practises unnatural unchastity, Aus. Epigr. 131.