[1] : The Collaborative International Dictionary of English v.0.48

back \back\, v. i.
   1. to move or go backward; as, the horse refuses to back.
      1913 webster

   2. naut. to change from one quarter to another by a course
      opposite to that of the sun; -- used of the wind.
      1913 webster

   3. sporting to stand still behind another dog which has
      pointed; -- said of a dog. eng.
      1913 webster

   to back and fill, to manage the sails of a ship so that the
      wind strikes them alternately in front and behind, in
      order to keep the ship in the middle of a river or channel
      while the current or tide carries the vessel against the
      wind. hence: fig. to take opposite positions
      alternately; to assert and deny. colloq.

   to back out, to back down, to retreat or withdraw from a
      promise, engagement, or contest; to recede. colloq.
      1913 webster

            cleon at first . . . was willing to go; but, finding
            that he nicias was in earnest, he tried to back
            out.                                  --jowett
                                                  thucyd. 
      1913 webster
see also:
to back and fill to back out to back down 

Back Down >> B Words
Back Down, definition of term: Back Down
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Back >> B Words
Back, definition of term: Back
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Back Off >> B Words
Back Off, definition of term: Back Off
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Back Out >> B Words
Back Out, definition of term: Back Out
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Back Up >> B Words
Back Up, definition of term: Back Up
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Back Link >> B Words
Back Link, definition of term: Back Link
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Back End >> B Words
Back End, definition of term: Back End
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Back Country >> B Words
Back Country, definition of term: Back Country
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Back Door >> B Words
Back Door, definition of term: Back Door
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Answer Back >> A Words
Answer Back, definition of term: Answer Back
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