Source : Webster's Revised Unabridged Dictionary (1913)

Overtire \O`ver*tire"\, v. t.
   To become too tired. --Br. Hall.

Overtire \O`ver*tire"\, v. t.
   To tire to excess; to exhaust.

Source : WordNet®

overtire
     v : tire excessively [syn: {overweary}, {overfatigue}]