The Collaborative International Dictionary of English v.0.48:

Canaille \Ca*naille"\, n. [F. canaille (cf. It. canaglia), prop.
   and orig. a pack of dogs, fr. L. Canis dog.]
   1. The lowest class of people; the rabble; the vulgar.
      [1913 Webster]

   2. Shorts or inferior flour. [Canadian]
      [1913 Webster]