A natural periodic state of rest for the mind and body, in which the eyes usually close and consciousness is completely or partially lost, so that there is a decrease in bodily movement and responsiveness to external stimuli. During sleep the brain in humans and other mammals undergoes a characteristic cycle of brain-wave activity that includes intervals of dreaming, Repose; rest; quiet; dormancy; hence, the rest of the grave; death, A crust of dried tears or mucus normally forming around the inner rim of the eye during sleep, intransitive verb_ To be in the state of sleep or to fall asleep, To pass or get rid of by sleeping, To provide sleeping accommodations fortransitive ver_b To be slumbering in; -- followed by a cognate object, rare To give sleep to; to furnish with accomodations for sleeping; to lodge