The Collaborative International Dictionary of English v.0.48:

Soss \Soss\, n. [See Sesspol.]
   Anything dirty or muddy; a dirty puddle. [Prov. Eng.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Soss \Soss\ (?; 115), v. i. [Cf. Souse.]
   To fall at once into a chair or seat; to sit lazily. [Obs.]
   --Swift.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Soss \Soss\, v. t.
   To throw in a negligent or careless manner; to toss. [Obs.]
   --Swift.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Soss \Soss\, n.
   1. A lazy fellow. [Obs.] --Cotgrave.
      [1913 Webster]

   2. A heavy fall. [Prov. Eng.] --Hallowell.
      [1913 Webster]