Overwork \O`ver*work"\, v. t. [imp. & p. p. {Overworked}or {Overwrought}; p. pr. & vb. n. {Overworking}.] 1. To work beyond the strength; to cause to labor too much or too long; to tire excessively; as, to overwork a horse. 2. To fill too full of work; to crowd with labor. My days with toil are overwrought. --Longfellow. 3. To decorate all over.