Can not fall asleep

is an unpleasant dream that can cause a strong emotional response from the mind

a clock with a device that can be made to sound at the time set in advance, used to wake someone up.

the time at which lunch is usually eaten

They are worn for sleeping

to sleep for a short time (during the day

Is a piece of soft cloth large enough either to cover or to enfold a great portion of the user's body.

to sleep beyond the time for waking

To remain awake past one's usual or required bedtime.

the time at which a person usually goes to bed