The Collaborative International Dictionary of English v.0.48:

Pack \Pack\, v. i.
   1. To make up packs, bales, or bundles; to stow articles
      securely for transportation.
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   2. To admit of stowage, or of making up for transportation or
      storage; to become compressed or to settle together, so as
      to form a compact mass; as, the goods pack conveniently;
      wet snow packs well.
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   3. To gather in flocks or schools; as, the grouse or the
      perch begin to pack. [Eng.]
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   4. To depart in haste; -- generally with off or away.
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            Poor Stella must pack off to town     --Swift.
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            You shall pack,
            And never more darken my doors again. --Tennyson.
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   5. To unite in bad measures; to confederate for ill purposes;
      to join in collusion. [Obs.] "Go pack with him." --Shak.
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   To send packing, to drive away; to send off roughly or in
      disgrace; to dismiss unceremoniously. "The parliament . .
      . presently sent him packing." --South.
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