n.
Pronunciation: ' ō
Function: noun
Inflected Form: plural o's or os \ ' ō z \
Usage: often cap
often attrib
before 12th century
1 a : the 15th letter of the English alphabet b : a graphic representation of this letter c : a speech counterpart of orthographic o
2 : a graphic device for reproducing the letter o
3 : one designated o especially as the 15th in order or class
4 : something shaped like the letter O especially : ZERO