clear \clear\, v. t. imp.  p. p. cleared; p. pr.  vb. n.
   clearing.
   1. to render bright, transparent, or undimmed; to free from
      clouds.
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            he sweeps the skies and clears the cloudy north.
                                                  --dryden.
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   2. to free from impurities; to clarify; to cleanse.
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   3. to free from obscurity or ambiguity; to relive of
      perplexity; to make perspicuous.
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            many knotty points there are
            which all discuss, but few can clear. --prior.
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   4. to render more quick or acute, as the understanding; to
      make perspicacious.
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            our common prints would clear up their
            understandings.                       --addison
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   5. to free from impediment or incumbrance, from defilement,
      or from anything injurious, useless, or offensive; as, to
      clear land of trees or brushwood, or from stones; to clear
      the sight or the voice; to clear one's self from debt; --
      often used with of, off, away, or out.
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            clear your mind of cant.              --dr. johnson.
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            a statue lies hid in a block of marble; and the art
            of the statuary only clears away the superfluous
            matter.                               --addison.
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   6. to free from the imputation of guilt; to justify,
      vindicate, or acquit; -- often used with from before the
      thing imputed.
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            i . . . am sure he will clear me from partiality.
                                                  --dryden.
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            how wouldst thou clear rebellion?    --addison.
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   7. to leap or pass by, or over, without touching or failure;
      as, to clear a hedge; to clear a reef.
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   8. to gain without deduction; to net.
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            the profit which she cleared on the cargo.
                                                  --macaulay.
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   to clear a ship at the customhouse, to exhibit the
      documents required by law, give bonds, or perform other
      acts requisite, and procure a permission to sail, and such
      papers as the law requires.

   to clear a ship for action, or to clear for action
      naut., to remove incumbrances from the decks, and
      prepare for an engagement.

   to clear the land naut., to gain such a distance from
      shore as to have sea room, and be out of danger from the
      land.

   to clear hawse naut., to disentangle the cables when
      twisted.

   to clear up, to explain; to dispel, as doubts, cares or
      fears.
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see also:
cleared clearing to clear a ship at the customhouse to clear a ship for action to clear for action to clear the land 
to clear hawse to clear up