The Free On-line Dictionary of Computing (30 December 2018):

static link

    (Or "access link" or "environment link") A pointer
   from an activation record to the activation record for the
   textually enclosing scope.  A static link is only required
   in a statically (lexically) scoped language.

   The number of static links to follow may be determined
   statically (at compile time).  It is simply the difference in
   lexical nesting depth between the declaration and the
   reference.

   See also display.

   (1995-03-07)