The fifteenth letter of the English alphabet, called o and written in the Latin script.
Orgasm.
The number of overs bowled.
American Library Association abbreviation of octavo, a book size (20-25 cm).
Someone associated with Leyton Orient Football Club, as a player, coach, supporter etc.
Opium.
Something shaped like the letter O.
A blood type that lacks A or B antigens and may only receive transfusions of similar type O blood, but may donate to all (neglecting Rh factor). Synonym: universal donor.
The English vocative particle, used for direct address.
A surname from Korean.
The twentieth letter of the English alphabet, called tee and written in the Latin script.