The Collaborative International Dictionary of English v.0.48:

Souse \Souse\, v. t. [imp. & p. p. Soused; p. pr. & vb. n.
   Sousing.] [Cf. F. saucer to wet with sauce. See Souse
   pickle.]
   1. To steep in pickle; to pickle. "A soused gurnet." --Shak.
      [1913 Webster]

   2. To plunge or immerse in water or any liquid.
      [1913 Webster]

            They soused me over head and ears in water.
                                                  --Addison.
      [1913 Webster]

   3. To drench, as by an immersion; to wet throughly.
      [1913 Webster]

            Although I be well soused in this shower.
                                                  --Gascoigne.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Soused \Soused\, adj.
   Thoroughly drunken; inebriated. [slang]

   Syn: bombed; pickled; drunk; intoxicated.
        [PJC]

WordNet (r) 3.0 (2006):

soused
    adj 1: very drunk [syn: besotted, blind drunk, blotto,
           crocked, cockeyed, fuddled, loaded, pie-eyed,
           pissed, pixilated, plastered, slopped, sloshed,
           smashed, soaked, soused, sozzled, squiffy,
           stiff, tight, wet]