To disturb the mental or emotional equilibrium of; upset, To move (a child, for example) back and forth or from side to side, especially in order to soothe or lull to sleep, In mezzotint engraving, to roughen (a metal plate) with a rocker or roulette, noun_ A rocking motion, Relatively hard, naturally formed mineral or petrified matter; stone, One that is similar to or suggestive of a mass of stone in stability, firmness, or dependability