Not moving or able to move quickly; proceeding at a low speed, Allowing movement or action only at a low speed, Only moderately warm; low, adverb_ So as to fall behind the correct time or rate, At a low speed, intransitive verb_ To make slow or slower, To go slower; -- often with up, To delay; retard, transitive verb_ To render slow; to slacken the speed of; to retard; to delay, A sluggard, A Middle English spelling of slough