O
1 none. (also o) (plural. Os or o`s) 1 fifteenth letter of the alphabet. 2 (0) nought, zero.
1 none. (also o) (plural. Os or o`s) 1 fifteenth letter of the alphabet. 2 (0) nought, zero.
2 abbreviation. (also o.) Old.
4 interjection. 1 variation of *oh. 2 prefixed to a name in the vocative (o god). [natural exclamation]
`clock adverb of the clock (used to specify the hour) (6 o`clock).
`er adverb. & prep. Poet. = *over. [contraction]