To prevent someone from going to bed or to sleep
To continue with (work, etc).
To maintain; to preserve; to prevent from deteriorating.
To stay even or ahead.
To ensure that one remains well-informed about something.
To relax or sleep around midday
The highest point; culmination.
The letter ن in the Arabic script.
The time of day when the sun is in its zenith; twelve o'clock in the day, midday.