'Deplete' definitions:

Definition of 'deplete'

From: WordNet
verb
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, deplete, exhaust, run through, wipe out]

Definition of 'Deplete'

From: GCIDE
  • 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. [1913 Webster]
  • 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. [1913 Webster]