The Collaborative International Dictionary of English v.0.48:

Impedimenta \Im*ped`i*men"ta\, n. pl. [L. See Impediment,
   Impede.]
   Things which impede or hinder progress; incumbrances;
   baggage; specif. (Mil.), the supply trains which must
   accompany an army.

         On the plains they will have horses dragging travoises,
         dogs with travoises, women and children loaded with
         impedimenta.                             --Julian
                                                  Ralph.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

impedimenta
    n 1: any structure that makes progress difficult [syn:
         obstruction, obstructor, obstructer, impediment,
         impedimenta]
    2: the baggage and equipment carried by an army