How many syllables in sleeps?

Definition of sleeps:

sleeps (noun):

the natural, easily reversible periodic state of many living things that is marked by the absence of wakefulness and by the loss of consciousness of one's surroundings, is accompanied by a typical body posture (such as lying down with the eyes closed), the occurrence of dreaming, and changes in brain activity and physiological functioning, is made up of cycles of non-rem sleep and rem sleep, and is usually considered essential to the restoration and recovery of vital bodily and mental functions