v. Overtoiled by that day's grief and travel. — Tennyson.
the GNU version of the Collaborative International Dictionary of English
v. To overwork.
v. To weary excessively; to exhaust.
The Century Dictionary and Cyclopedia
To overtask or overdrive with work; overwork; wear out by toil.
Word Usage
"To fits of hypochondria and deep dejection he had, as he himself tells us, been subject from his earliest manhood, and he attributes to overtoil in boyhood this tendency which was probably a part of his natural temperament."