The Collaborative International Dictionary of English v.0.48:
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.