Source : Webster's Revised Unabridged Dictionary (1913)

Deplete \De*plete"\, v. t. [imp. & p. p. {Depleted}; p. pr. &
   vb. n. {Depleting}.] [From L. deplere to empty out; de- +
   plere to fill. Forined like replete, complete. See {Fill},
   {Full}, a.]
   1. (Med.) To empty or unload, as the vessels of human system,
      by bloodletting or by medicine. --Copland.

   2. To reduce by destroying or consuming the vital powers of;
      to exhaust, as a country of its strength or resources, a
      treasury of money, etc. --Saturday Review.

Source : WordNet®

deplete
     v : use up (resources or materials); "this car consumes a lot of
         gas"; "We exhausted our savings"; "They run through 20
         bottles of wine a week" [syn: {consume}, {eat up}, {use
         up}, {eat}, {exhaust}, {run through}, {wipe out}]