descendant of; used to form Irish patronymic surnames.

The fifteenth letter of the English alphabet, called o and written in the Latin script.

Something shaped like the letter O.

The ordinal number fifteenth, derived from this letter of the English alphabet, called o and written in the Latin script.

The English vocative particle, used for direct address.

(printing) American Library Association abbreviation of octavo, a book size (20-25 cm). / (soccer) Someone associated with Leyton Orient Football Club, as a player, coach, supporter etc.

(historical) Abbreviation of morally offensive. (film classification of the National Legion of Decency)

A surname from Korean.

Alternative form of E

A linking vowel inserted interconsonantally between two morphemes, to ease pronunciation, without contributing to the meaning. It frequently joins words or combining forms of Ancient Greek or Classical Latin origin in the classical compounds of New Latin and international scientific vocabulary, but it can also be used to join modern terms and even abbreviations, either formally or informally.