The Collaborative International Dictionary of English v.0.48:

Enlarge \En*large"\, v. t. [imp. & p. p. Enlarged; p. pr. &
   vb. n. Enlarging.] [OF. enlargier; pref. en- (L. in) + F.
   large wide. See Large.]
   1. To make larger; to increase in quantity or dimensions; to
      extend in limits; to magnify; as, the body is enlarged by
      nutrition; to enlarge one's house.
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            To enlarge their possessions of land. --Locke.
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   2. To increase the capacity of; to expand; to give free scope
      or greater scope to; also, to dilate, as with joy,
      affection, and the like; as, knowledge enlarges the mind.
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            O ye Corinthians, our . . . heart is enlarged. --2
                                                  Cor. vi. 11.
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   3. To set at large or set free. [Archaic]
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            It will enlarge us from all restraints. --Barrow.
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   Enlarging hammer, a hammer with a slightly rounded face of
      large diameter; -- used by gold beaters. --Knight.

   To enlarge an order or To enlarge a rule (Law), to extend
      the time for complying with it. --Abbott.

   To enlarge one's self, to give free vent to speech; to
      spread out discourse. "They enlarged themselves on this
      subject." --Clarendon.

   To enlarge the heart, to make free, liberal, and
      charitable.

   Syn: To increase; extend; expand; spread; amplify; augment;
        magnify. See Increase.
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Bouvier's Law Dictionary, Revised 6th Ed (1856):

ENLARGING. Extending or making more comprehensive; as an enlarging statute,
which is one extending the common law.