Sleep \Sleep\, v. t. 1. To be slumbering in; -- followed by a cognate object; as, to sleep a dreamless sleep. --Tennyson. 2. To give sleep to; to furnish with accomodations for sleeping; to lodge. [R.] --Blackw. Mag. {To sleep away}, to spend in sleep; as, to sleep away precious time. {To sleep off}, to become free from by sleep; as, to sleep off drunkeness or fatigue.