The Collaborative International Dictionary of English v.0.48:

Travois \Tra`vois"\, n. [Cf. Travail.]
   1. A primitive vehicle, common among the North American
      Indians, usually two trailing poles serving as shafts and
      bearing a platform or net for a load.

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

   2. A logging sled. [Northern U. S. & Canada]
      [Webster 1913 Suppl.]