\outer\def\nonouterdef#1#2{\begingroup
  \def\startdef{\def #1\bgroup}%
%  \expandafter\defstart \csname #2\endcsname\egroup
  \def\outername{\csname #2\endcsname}%
  \expandafter\startdef \outername \egroup
\endgroup}

\tracingall
\nonouterdef\innernewwrite{newwrite}