In parliamentary proceedings: (a) The course of a
   proposition (bill, resolution, etc.) through the several stages of
   consideration and action; as, during its passage through Congress the
   bill was amended in both Houses. (b) The advancement of a bill or other
   proposition from one stage to another by an affirmative vote; esp., the
   final affirmative action of the body upon a proposition; hence,
   adoption; enactment; as, the passage of the bill to its third reading
   was delayed.