資料來源 : Free On-Line Dictionary of Computing

overflow bit
     
        1. A {flag} on some processors indicating an attempt to
        calculate a result too large for the destination {register} to
        hold.
     
        2. More generally, an indication of any kind of capacity
        overload condition.  "Well, the {Ada} description was
        {baroque} all right, but I could hack it OK until they got to
        the exception handling ... that set my overflow bit."
     
        3. The hypothetical bit that will be set if a hacker doesn't
        get to make a trip to the Room of Porcelain Fixtures: "I'd
        better process an internal interrupt before the overflow bit
        gets set".
     
        [{Jargon File}]