The Collaborative International Dictionary of English v.0.48:

Disburse \Dis*burse"\, v. t. [imp. & p. p. Disbursed; p. pr. &
   vb. n. Disbursing.] [OF. desbourser, F. d['e]bourser; pref.
   des- (L. dis-) + bourse purse. See Burse, and cf.
   Dispurse.]
   To pay out; to expend; -- usually from a public fund or
   treasury.
   [1913 Webster]

         The duty of collecting and disbursing his revenues.
                                                  --Macaulay.
   [1913 Webster]

   Disbursing officer, an officer in any department of the
      public service who is charged with the duty of paying out
      public money.
      [1913 Webster]

WordNet (r) 3.0 (2006):

disburse
    v 1: expend, as from a fund [syn: disburse, pay out]

Moby Thesaurus II by Grady Ward, 1.0:

43 Moby Thesaurus words for "disburse":
   administer, budget, cost, cost out, deal, deal out, dispense,
   disperse, dispose, distribute, dole, dole out, expend, fork out,
   give, give out, go through, incur costs, invest, issue, lay,
   lay out, measure out, mete, mete out, open the purse, outlay,
   parcel out, partition, pass around, pay, pay out, portion out,
   put out, run through, schedule, shell out, sink money in, spend,
   splurge, spoon out, squander, throw money around