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Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   hole
      1. <electronics> In the hole model of current flow, the absence
      of an electron, e.g. in a semiconductor material.  In the
      electron model, a hole can be thought of as an incomplete outer
      electron shell in a doping substance.  Considering holes as
      positive charge carriers is a useful abstraction.
      2. <security> A security vulnerability, particularly one which
      allows an attacker to gain unauthorised access to a system (by
      analogy with a hole in a wall).
      (2014-10-25)