Orsova

Orsova, two fortified towns on opposite banks of the Danube, at the Iron Gates: Old Orsova (3), in Hungary, is a trading and shipping centre; New Orsova, in Servia, was repeatedly taken and retaken in the wars of the 18th century.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Orsini, Felice * Orviëto
Orme, Robert
Ormolu
Ormonde, James Butler, Duke of
Ormuz
Ormuzd
Orontes
Orosius, Paulus
Orpheus
Orrery
Orsini, Felice
Orsova
Orviëto
Oscans
Oscar I.
Oscott
O'Shaughnessy, Arthur
Osiander, Andreas
Osiris
Osmanlis
Osmose
Osnabrück