As used in this chapter, the term—

(1) “bankruptcy court” means the court having jurisdiction over the reorganization of the Rock Island Railroad;

(2) “Board” means the Railroad Retirement Board;

(3) “Commission” means the Interstate Commerce Commission;

(4) “employee” includes any employee of the Rock Island Railroad as of August 1, 1979, but does not include any individual serving as president, vice-president, secretary, treasurer, comptroller, counsel, member of the board of directors, or any other person performing such functions;

(5) the term “Rock Island Railroad” means the Chicago, Rock Island and Pacific Railroad Company, the estate of such Company in its reorganization proceeding, or the trustee appointed in such proceeding; and

(6) the term “Secretary” means the Secretary of Transportation.