Source : Free On-Line Dictionary of Computing

MIB Variable
     
        A managed object that is defined in a {Management Information
        Base} (MIB).  The object is defined by a textual name and a
        corresponding object identifier, a {syntax}, an access mode, a
        status, and a description of the semantics of the managed
        object.  The MIB Variable contains pertinent management
        information that is accessible as defined by the access mode.
     
        (1995-03-22)