To touch or touch up again; improve by new touches; revise; specifically, in the fine arts, to improve, as a painting, by new touches; go over a second time, as a work of art, in order to restore or strengthen a faded part, make additions, or remove blemishes, for its general improvement.n. A repeated touch; an additional touch given in revision; specifically, in the fine arts, additional work done on that which might previonsly have been regarded as finished.