The Collaborative International Dictionary of English v.0.48:

Overwork \O`ver*work"\, v. t. [imp. & p. p. Overworkedor
   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.
      [1913 Webster]

   2. To fill too full of work; to crowd with labor.
      [1913 Webster]

            My days with toil are overwrought.    --Longfellow.
      [1913 Webster]

   3. To decorate all over.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Overwrought \O`ver*wrought\, p. p. & a. from Overwork.
   1. Wrought upon excessively; overworked.
      [1913 Webster]

   2. Extremely agitated or excited; overexcited; -- of people.
      [PJC]

WordNet (r) 3.0 (2006):

overwrought
    adj 1: deeply agitated especially from emotion; "distraught with
           grief" [syn: distraught, overwrought]