None (pronoun)

1. Not any.
2. No one.
3. Not one of two or more people or things.

Origin:

From old english 'nān' (not one).

Examples:

1. None of the students turned in their homework.
2. There is none left in the container.
3. None of the applicants met the qualifications for the job.
4. None were able to solve the problem.
5. She asked if anyone wanted more coffee, but none spoke up.