The Collaborative International Dictionary of English v.0.48:

Void \Void\, v. t. [imp. & p. p. Voided; p. pr. & vb. n.
   Voiding.] [OF. voidier, vuidier. See Void, a.]
   1. To remove the contents of; to make or leave vacant or
      empty; to quit; to leave; as, to void a table.
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            Void anon her place.                  --Chaucer.
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            If they will fight with us, bid them come down,
            Or void the field.                    --Shak.
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   2. To throw or send out; to evacuate; to emit; to discharge;
      as, to void excrements.
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            A watchful application of mind in voiding
            prejudices.                           --Barrow.
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            With shovel, like a fury, voided out
            The earth and scattered bones.        --J. Webster.
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   3. To render void; to make to be of no validity or effect; to
      vacate; to annul; to nullify.
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            After they had voided the obligation of the oath he
            had taken.                            --Bp. Burnet.
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            It was become a practice . . . to void the security
            that was at any time given for money so borrowed.
                                                  --Clarendon.
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The Collaborative International Dictionary of English v.0.48:

Voiding \Void"ing\, n.
   1. The act of one who, or that which, voids. --Bp. Hall.
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   2. That which is voided; that which is ejected or evacuated;
      a remnant; a fragment. [R.] --Rowe.
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   Voiding knife, a knife used for gathering up fragments of
      food to put them into a voider.
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The Collaborative International Dictionary of English v.0.48:

Voiding \Void"ing\, a.
   Receiving what is ejected or voided. "How in our voiding
   lobby hast thou stood?" --Shak.
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WordNet (r) 3.0 (2006):

voiding
    n 1: the bodily process of discharging waste matter [syn:
         elimination, evacuation, excretion, excreting,
         voiding]