O

O (adverb)
[o]

From high-astroxian oup, from latin ubi

1) Where:

''O trennas tos ? ''Where are you ?

O (preposition)
[ɔ]

From astroxian adverb o, "where". (note the distinct pronounciation)

1) At + proper noun; it + proper noun:

''Iē et o Engelland. ''i am in England.

Noun
o (plural oho)
 * 1) The name of the Latin-script letter O.