ōstium, ī [ōs, mouth], m., the mouth of a river.
Otācilius, ī, m., (T.) Otācilius Crassus, consul 263 B.C.
Othō, ōnis, m., (M. Salvius) Othō, Roman emperor from January 15 to April 16, 69 A.D.
ōtium, ī, n., leisure; ease, idleness; rest, peace.
ovō, āre, —, —, to exult, rejoice; receive an ovation, triumph.
P.
P., abbreviation of the praenomen Publius.
pācō, āre, āvī, ātus [pāx], to pacify, make peaceful.
Pacorus, ī, m., son of Orodes I., king of Parthia.