The Collaborative International Dictionary of English v.0.48:

Colluvies \Col*lu"vi*es\, n. [L., a collection of washings,
   dregs, offscourings, fr. colluere to wash; col- + luere to
   wash.]
   1. A collection or gathering, as of pus, or rubbish, or odds
      and ends.
      [Webster 1913 Suppl.]

   2. A medley; offscourings or rabble.
      [Webster 1913 Suppl.]