Orsa

ORSA a mountain with a bay, on the east coast of Arabia, without the straits of the Persian Gulf. (Pliny (Plin. Nat. 6.28. s. 32.) Mr. Forster explains the name to mean literally in Arabic the transverse mountain.He adds: Its position is effectually determined from the East India Company's Chart, where, about a third of a degree south of Daba, a great mountain, at right angles with the mountains of Lima, runs right down to the sea, while at its base lies the port of Chorfakan.( Geog. of Arabia, vol. 2. p. 228.)
[G.W]