o

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o noun
or O /ˈoʊ/
plural o's or os or O's or Os /ˈoʊz/
o
noun
or O /ˈoʊ/
plural o's or os or O's or Os /ˈoʊz/
Learner's definition of O
: the 15th letter of the English alphabet
[count]
[noncount]
[count] : the number zero used in speech when referring to numbers
[count] used as a mark at the end of a letter, an e-mail, etc., to represent a hug
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