The Collaborative International Dictionary of English v.0.48:

Suillage \Su"il*lage\, n. [OF. souillage, soillage, fr.
   souiller, soiller. See Soil to stain, and cf. Sullage.]
   A drain or collection of filth. [Obs.] [Written also
   sulliage, and sullage.] --Sir H. Wotton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Sulliage \Sul"li*age\, n. [Cf. Sullage, Suillage, or
   Sully, v. t.]
   Foulness; filth. [Obs.]
   [1913 Webster]

         Though we wipe away with never so much care the dirt
         thrown at us, there will be left some sulliage behind.
                                                  --Gov. of
                                                  Tongue.
   [1913 Webster]