bosporian

from The Century Dictionary.

• Pertaining to a bosporus, particularly (with a capital) to the Thracian or the Cimmerian Bosporus, or to the Greek kingdom of Bosporus named from the latter (about 500 B. C. to A. D. 259).

from the GNU version of the Collaborative International Dictionary of English.

• adjective Of or pertaining to the Thracian or the Cimmerian Bosporus.