to yearn for something intensely, even in one's sleep; to desire something one has long wanted

to dream or the state of dreaming

to sleep lightly for a short period, often while sitting up or without fully going to bed

(literary) awake or asleep; all the time; constantly

To rise early and sleep late; to work or study hard and diligently, often used to describe someone's tireless dedication to a task.

to yearn for day and night; to strongly desire

a genus (Mei) and species (Mei long) of small troodontid dinosaur from the Early Cretaceous, known for its bird-like sleeping posture

to have a nightmare