subs. (common).1. A sneak; (2) a greedy starveling (HALLIWELL); and (3) a cheat. Hence as adj. (or SLINKY) = (1) sneaky, mean; and 2 (America) = thin, lank (BARTLETT).
1816. SCOTT, The Antiquary, xv. He hasna settled his account wi my gudeman, the deacon, for this twalmonthhes but SLINK, I doubt.
1847. W. T. THOMPSON, Chronicles of Pineville, 139. I despise a SLINK!
4. (old).A bastard: cf. SLINK = to miscarry (of beasts).
1702. COMBERBACH, Byron and Elms, Comberbach, 391. What did you go to London for but to drop your SLINK.