1. The fifteenth letter of the English alphabet: What grapheme or graphic symbol comes after O in the English alphabet?
2. A design in the shape of a circle: The bright blue round O in the advertisement caught the buyers' attention.
3. This letter symbol is often incorrectly used to indicate a zero or no amount: The final score in the game was "10 to 0", instead of saying, "10 to zero"; however, there is a significant difference between the letter O and the number 'zero' despite their similarities in format.

1. Used to express emotion or to acknowledge information: Jerry was so startled when the runner bumped into him that all he could say was, "OH!" in reaction.

Susan said, "Oh, yes, I understand what you are saying."

2. Used to address or to speak to someone directly: The man at the counter said, "Oh sir, you forgot your change."
3. Used to express surprise, happiness, disappointment, or sadness: Grandpa remarked, "Oh no! I forgot my glasses."

Often used verbally to indicate naught or nil: Halfway through the game the announcer shouted that the score was "oh to oh", when technically he should have said "zero to zero" because the "oh" is a letter and the "zero" indicates a number.

1. To be responsible for the repayment of a debt or a loan to someone: Grace asked her husband, "Jim, don't you owe the bank a significant sum of money because of the loan that you negotiated last year?"
2. To be indebted or under obligation for something: Lucinda said, "I owe my good fortune as a writer to my English teacher when I was in school."
3. Used to say that something should be done for or given to someone: Peter's mother stated, "Peter, you owe Josie an explanation and it is possible that you also owe her an apology."