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.
   To cast prematurely; -- said of female beasts; as, a cow that
   slinks her calf.

Slink \Slink\, a.
   1. Produced prematurely; as, a slink calf.

   2. Thin; lean. [Scot.]

Slink \Slink\, n.
   1. The young of a beast brought forth prematurely, esp. a
      calf brought forth before its time.

   2. A thievish fellow; a sneak. [Prov. Eng. & Scot.]

Source : WordNet®

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