Source : Webster's Revised Unabridged Dictionary (1913)

Slink \Slink\, v. t. [imp. {Slunk}, Archaic {Slank}; p. p.
   {Slunk}; p. pr. & vb. n. {Slinking}.] [AS. slincan; probably
   akin to G. schleichen, E. sleek. See {Sleek}, a.]
   1. To creep away meanly; to steal away; to sneak. ``To slink
      away and hide.'' --Tale of Beryn.

            Back to the thicket slunk The guilty serpent.
                                                  --Milton.

            There were some few who slank obliquely from them as
            they passed.                          --Landor.

   2. To miscarry; -- said of female beasts.

Slink \Slink\, v. t. [imp. {Slunk}, Archaic {Slank}; p. p.
   {Slunk}; p. pr. & vb. n. {Slinking}.] [AS. slincan; probably
   akin to G. schleichen, E. sleek. See {Sleek}, a.]
   1. To creep away meanly; to steal away; to sneak. ``To slink
      away and hide.'' --Tale of Beryn.

            Back to the thicket slunk The guilty serpent.
                                                  --Milton.

            There were some few who slank obliquely from them as
            they passed.                          --Landor.

   2. To miscarry; -- said of female beasts.

Slunk \Slunk\,
   imp. & p. p. of {Slink}.

Source : WordNet®

slink
     v : walk stealthily; "I saw a cougar slinking toward its prey"
     [also: {slunk}]

slunk
     See {slink}