The Collaborative International Dictionary of English v.0.48:

Expend \Ex*pend"\, v. t. [imp. & p. p. Expended; p. pr. & vb.
   n. Expending.] [L. expendere, expensum, to weigh out, pay
   out, lay out, lay out; ex out + pendere to weigh. See
   Poise, and cf. Spend.]
   To lay out, apply, or employ in any way; to consume by use;
   to use up or distribute, either in payment or in donations;
   to spend; as, they expend money for food or in charity; to
   expend time labor, and thought; to expend hay in feeding
   cattle, oil in a lamp, water in mechanical operations.
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         If my death might make this island happy . . .
         I would expend it with all willingness.  --Shak.
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The Collaborative International Dictionary of English v.0.48:

Expend \Ex*pend"\, v. i.
   1. To be laid out, used, or consumed.
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   2. To pay out or disburse money.
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            They go elsewhere to enjoy and to expend. --Macaulay
      .
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WordNet (r) 3.0 (2006):

expend
    v 1: use up, consume fully; "The legislature expended its time
         on school questions" [syn: use, expend]
    2: pay out; "spend money" [syn: spend, expend, drop]