What does Nos mean?

A Word of denial or refusal, not in any degree, a negative vote, not any, none.
no means

1. not any.no oneThere is no water left.No Hot Dogs were sold yesterday.No customer personal data will be retained unless it is rendered anonymous.
2. Not any possibility or allowance of (doing something).No smokingThere's no stopping her once she gets going.
3. Not; not properly, not really; not fully.My mother's no fool.Working nine to five every day is no life.