The Collaborative International Dictionary of English v.0.48:

Keep \Keep\, v. i.
   1. To remain in any position or state; to continue; to abide;
      to stay; as, to keep at a distance; to keep aloft; to keep
      near; to keep in the house; to keep before or behind; to
      keep in favor; to keep out of company, or out reach.
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   2. To last; to endure; to remain unimpaired.
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            If the malt be not thoroughly dried, the ale it
            makes will not keep.                  --Mortimer.
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   3. To reside for a time; to lodge; to dwell. [Now disused
      except locally or colloquially.]
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            Knock at his study, where, they say, he keeps.
                                                  --Shak.
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   4. To take care; to be solicitous; to watch. [Obs.]
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            Keep that the lusts choke not the word of God that
            is in us.                             --Tyndale.
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   5. To be in session; as, school keeps to-day. [Colloq.]
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   To keep from, to abstain or refrain from.

   To keep in with, to keep on good terms with; as, to keep in
      with an opponent.

   To keep on, to go forward; to proceed; to continue to
      advance.

   To keep to, to adhere strictly to; not to neglect or
      deviate from; as, to keep to old customs; to keep to a
      rule; to keep to one's word or promise.

   To keep up, to remain unsubdued; also, not to be confined
      to one's bed.
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