WordNet (r) 3.0 (2006):

Pontus
    n 1: (Greek mythology) ancient personification of the sea;
         father of Nereus [syn: Pontus, Pontos]
    2: an ancient region of northern Asia Minor on the Black Sea; it
       reached its height under Mithridates VI but was later
       incorporated into the Roman Empire

Easton's 1897 Bible Dictionary:

Pontus
   a province of Asia Minor, stretching along the southern coast of
   the Euxine Sea, corresponding nearly to the modern province of
   Trebizond. In the time of the apostles it was a Roman province.
   Strangers from this province were at Jerusalem at Pentecost
   (Acts 2:9), and to "strangers scattered throughout Pontus,"
   among others, Peter addresses his first epistle (1 Pet. 1:1). It
   was evidently the resort of many Jews of the Dispersion. Aquila
   was a native of Pontus (Acts 18:2).


Hitchcock's Bible Names Dictionary (late 1800's):

Pontus, the sea