Source : Webster's Revised Unabridged Dictionary (1913)

Duffel \Duf"fel\, n.
   Outfit or suppplies, collectively; kit. [Colloq., U. S.]

Duffel \Duf"fel\, n. [D. duffel, from Duffel, a town not far
   from Antwerp.]
   A kind of coarse woolen cloth, having a thick nap or frieze.
   [Written also {duffle}.]

         Good duffel gray and flannel fine.       -- Wordsworth.

Source : WordNet®

duffel
     n 1: a large cylindrical bag of heavy cloth; for carrying
          personal belongings [syn: {duffel bag}, {duffle bag}, {duffle}]
     2: a coarse heavy woolen fabric [syn: {duffle}]